Watercolour prompt library

Watercolour prompt library on Morphic

Tested watercolour prompts you can copy and run on Morphic, built around the transparent medium and what only it can do. Wet in wet bleeds, granulation settling into the paper, blooms and backruns, and highlights left as bare paper rather than painted in white. Each one explains what the parts do, so you can adapt rather than guess.

Watercolour study of two granulating pigments settling separately into the paper, generated with Krea 2 Medium

Two granulating pigments meeting

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. An abstract study of two heavily granulating pigments meeting in the middle of a wet sheet, ultramarine from the left and burnt umber from the right, each settling separately into the tooth of the paper so that instead of blending into a clean mix they mottle and speckle where they meet, the heavier particles collecting visibly in the hollows. No subject at all, just the two colours and the seam between them. The wash left ragged at all four edges, bare paper around it. 1:1.

Edit prompt
Tight botanical watercolour of a poppy with crisp overlapping washes and clean edges, generated with Krea 2 Medium

Poppy study painted dry over dry

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A single field poppy painted as a tight botanical study, each wash laid onto completely dry paper so every layer keeps a clean crisp edge over the one beneath and nothing bleeds. Three successive glazes building the petal from pale scarlet to deep crimson, the veins left as fine lines of untouched paper. The stem and one bud included, the rest of the sheet left blank white. Controlled and deliberate rather than loose. Fine sable detail. 4:5.

Edit prompt
Watercolour mixing grid showing two pigments crossed at increasing proportions, generated with Krea 2 Medium

Mixing chart of two colours crossed

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A two colour mixing chart, a grid of five by five hand painted squares in which a warm yellow increases in proportion from left to right across the grid while a phthalo blue increases from top to bottom, so the corners are the two pure colours and the diagonal runs through the greens between them. The squares are hand painted with slightly uneven edges and small gaps of bare paper between them. No labels. Plain white surround. 1:1.

Edit prompt
Urban sketch of a narrow street drawn in ink first with loose colour washed over it, generated with Krea 2 Medium

Side street in pen and wash

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A narrow side street of tall shuttered buildings, drawn first in loose scratchy waterproof ink line with the perspective slightly wobbly, then washed over quickly with colour that runs past the drawn lines in several places and stops short of them in others. Some areas left as line only with no colour at all. A figure suggested in two strokes. Palette of warm grey, ochre and one dull turquoise shutter. Wash left open at both ends of the street. 3:2.

Edit prompt
Architectural elevation drawing rendered with flat watercolour washes over ruled ink lines, generated with Krea 2 Medium

Elevation rendered in wash

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. An architectural elevation of a three storey townhouse, drawn first in fine ruled ink line with a straight edge so every opening and course is accurate, then rendered with flat even washes laid inside the lines to indicate materials, a warm brick red for the walls, a cool grey for the slate and a pale wash for the glass. The washes are flat and even rather than expressive. Small figures drawn loosely at the base for scale. Plain bare paper surround, no background at all. 4:5.

Edit prompt
Watercolour food illustration of one plated dish floating on bare paper, generated with Krea 2 Medium

Menu illustration of a single dish

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A single plated dish painted as a menu illustration, floating on bare white paper with no table, background or shadow beyond a faint grey one directly beneath the plate. A bowl of ripe tomatoes and torn basil, painted in a few confident saturated strokes rather than carefully rendered, the brightest faces of the tomatoes left as unpainted paper. No more than about twenty brush marks in the whole picture. Palette of scarlet, deep green and a warm cream. 1:1.

Edit prompt
Watercolour sheet photographed with its stretched tape border and buckled surface, generated with Krea 2 Medium

Sheet with the tape edge still on it

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A finished watercolour photographed as a physical sheet still taped to its board, with a clean straight border of unpainted paper on all four sides where the gummed tape has held it and the surface gently cockled where heavy washes dried. Inside, a loose study of a rain washed hillside with two soft backruns left in the foreground. The tape edge slightly discoloured. Soft even light across the buckled paper showing the texture in raking shadow. 3:2.

Edit prompt
Watercolour study where wet colour dropped into a drying wash has formed cauliflower blooms, generated with Krea 2 Medium

Deliberate backruns in a drying wash

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A study in which clean water and wetter colour have been dropped deliberately into a wash that was already beginning to dry, producing three distinct cauliflower backruns, each with a pale centre and a hard scalloped darker rim where the pigment was pushed outward. The ground is a broad wash of olive and burnt orange across the sheet. Suggests a lichen covered rock without being a picture of one. No subject drawn. Ragged wash edges on all sides. 4:3.

Edit prompt
Simple watercolour still life of two pears where the lit side is unpainted paper, generated with Krea 2 Medium

Two pears with the light side left bare

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. Two pears on a table. The shadow side of each painted wet in wet so the colour bleeds softly into the damp paper, while the lit side is bare unpainted paper left completely untouched rather than painted pale. A soft cast shadow beneath them laid in one grey wash. Pencil underdrawing visible through the colour in places. Loose and quick, the wash edge left ragged and open around the table. Palette of yellow ochre, olive green and a violet grey shadow. 1:1.

Edit prompt
Open watercolour sketchbook spread with two small studies and handwritten notes between them, generated with Krea 2 Medium

Sketchbook opened at two studies

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. An open watercolour sketchbook photographed flat, the paper buckled and cockled where the washes dried and the centre gutter throwing a soft shadow. On the left page a small quick study of a hillside in three washes, on the right page two colour swatches and a half finished study of a tree. Short handwritten pencil notes between them, too small to read as words. Both studies stop well short of the page edges. A ring of a coffee cup on the lower corner. 3:2.

Edit prompt
Watercolour of pale leaves created by painting the dark background around their shapes, generated with Krea 2 Medium

Leaves painted by painting the gaps

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A cluster of pale leaves created entirely by negative painting, where the leaves themselves are never touched by the brush and their shapes emerge only because successive darker washes have been laid in the gaps around and behind them. Three receding layers, each darker than the last, so the leaves nearest the viewer are bare white paper and those behind are progressively deeper green. No outlines drawn anywhere. The darkest wash fades out at the corners. 4:5.

Edit prompt
Loose watercolour landscape with a wet in wet sky bleeding softly above a hard edged shoreline, generated with Krea 2 Medium

Estuary under a wet sky

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A wide estuary at low tide. The sky painted wet in wet so the grey and warm ochre run into one another with no hard edges anywhere in it, and the shoreline below painted onto dry paper so the mudbanks and the distant buildings keep crisp edges. A pale strip of unpainted paper left along the waterline as light on the water. Loose and quick, the wash left open at the bottom edge rather than filled to the border. Palette of payne grey, raw sienna and a little indigo. 2:3.

Edit prompt
Watercolour winter landscape where the snow is entirely unpainted paper, generated with Krea 2 Medium

Snow scene made of bare paper

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A winter landscape in which every snow covered surface is completely unpainted paper, with not a single stroke of white or pale paint anywhere. Only the things that are not snow are painted, a line of dark bare trees, a grey stone wall, a soft blue grey wash for the shadows lying across the drifts, and a cold pale sky. The snow reads as the brightest thing in the picture purely because nothing has been laid over it. Very few strokes overall. Palette of indigo, umber and cold grey. 3:2.

Edit prompt
Transparent watercolour portrait built from three successive glazes with the paper left for highlights, generated with Krea 2 Medium

Head study built in three glazes

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A head and shoulders study of an older woman built from exactly three transparent glazes, a pale raw sienna over the whole face, then a rose madder in the cheeks and lips, then a cool blue grey in the shadow under the jaw and beside the nose, each one letting the layer beneath show through. The forehead, the bridge of the nose and one cheekbone left as completely unpainted paper. Hair suggested with two loose strokes. Edges left open at the shoulders. 4:5.

Edit prompt
Watercolour texture study where salt has pushed pigment aside leaving pale starbursts, generated with Krea 2 Medium

Salt dropped into a damp wash

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A texture study in which coarse salt has been scattered into a damp wash at the moment the wet sheen had just gone, pushing the pigment aside as it dissolved and leaving a scatter of pale irregular starburst shapes across a deep turquoise ground, each with a slightly darker rim where the colour was displaced. A few undissolved grains still sitting on the surface. No subject, purely the texture. Ragged wash edge with bare paper beyond it. 1:1.

Edit prompt
Watercolour animal study where the fur is built entirely from broken dry brush strokes, generated with Krea 2 Medium

Hare in dry brush fur

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A study of a hare sitting alert, its coat built entirely from broken dry brush strokes dragged along the direction the fur actually grows, splaying at the flanks and following the curve of the back, with white paper showing between the strokes throughout. The ears and the eye painted with a fine brush in two clean washes for contrast. No background of any kind, the animal floating on bare paper with the strokes fading out at the base. Palette of raw umber, warm grey and one black eye. 4:5.

Edit prompt
Watercolour swatch chart of twelve painted squares each graded from full strength to nothing, generated with Krea 2 Medium

Swatch grid of twelve pigments

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A pigment test chart, twelve squares laid out in a grid of four by three, each one painted as a graded wash running from full strength colour at the top to almost clear water at the bottom so the dilution behaviour of each is visible. The squares are hand painted with slightly uneven edges and do not line up perfectly. A short handwritten pencil label beneath each square, too small to read as words. Plain white paper surround. Palette running through earths, blues and one bright red. 4:3.

Edit prompt
Watercolour street scene with reflections pulled downward in vertical wet strokes, generated with Krea 2 Medium

Wet pavement after rain

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A wet city street after rain, where the reflections in the pavement are made by pulling colour downward in soft vertical strokes into a still damp wash rather than by mirroring the scene above. A shop front and a red awning above, their colours dragged down into the road as blurred vertical bands. Narrow lines of bare unpainted paper left along the kerb edge as the brightest reflections. Figures suggested with two strokes each. Palette of payne grey, red ochre and one warm yellow. 2:3.

Edit prompt
Watercolour harbour scene with fine white rigging lines revealed after masking, generated with Krea 2 Medium

Harbour with the rigging masked out

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. A small harbour with two moored fishing boats, where the rigging and the mooring ropes are fine pale lines of completely untouched paper revealed after masking fluid was removed, far thinner and crisper than any brush could paint. The sky behind them is a single loose wet wash laid straight over the masking. The hulls painted in dry brush over rough paper so the tooth breaks the colour. Palette of indigo, rust and pale ochre. Wash open at the lower edge. 3:2.

Edit prompt
Watercolour still life of glass jars where the transparency is made by leaving paper bare, generated with Krea 2 Medium

Glass jars against the light

Watercolour on cold pressed cotton rag paper, transparent washes only, no white paint anywhere. Three glass jars on a windowsill against the light, their transparency built almost entirely from what has been left unpainted, with long vertical strips of bare white paper down the side of each jar and only a few thin pale washes for the shoulders, the rims and the contents. A single soft grey wash behind them for the window recess. The shadows on the sill cast as pale bands of colour rather than grey. Very few strokes. Palette of pale sea green, grey and one amber. 4:5.

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よくある質問

How do I use these watercolour prompts?
Copy a prompt, paste it into Morphic with Krea 2 Medium selected, and run it as written. Then change the subject but keep the clauses naming the wetness of the paper and where the bare white is left, because those two decide whether the result is a watercolour or a photograph with the colour softened.
Why is this library built for Krea 2 Medium?
Watercolour is a look before it is a subject, and Krea rewards prompts that describe a look rather than a specification. Testing confirmed it returns real transparent washes with the shadow side bled wet in wet and the lit side left as bare paper, rather than opaque paint or a filtered photograph. At four credits an image it is also cheap enough to run the same subject three ways and see which handling suited it.
How is this different from the oil painting library?
They are opposites, which is why they are separate. Oil is opaque: paint sits on top of what came before, highlights are added in thick light paint, and the surface itself has depth you can see across. Watercolour is transparent: every layer shows what is underneath, the paper does the lighting, and white is never painted, it is left. Almost every technique on one page is impossible on the other.
Why do the prompts say the highlights are unpainted rather than white?
Because that is the central discipline of the medium, and it is the instruction that produces the right result. A watercolour highlight is bare paper that was planned around and never covered, which is why it glows. Asking for white paint gets opaque gouache, and asking simply for bright highlights gets something washed out. Saying the lit side is unpainted paper with no white paint anywhere gets the real thing.
How do I make a painting look loose rather than laboured?
Say what you are leaving out. Ask for edges left open where the wash runs off rather than filled to the border, for a pencil underdrawing showing through, and for one or two areas resolved while the rest stays suggested. Looseness is a set of omissions, and naming them explicitly works far better than asking for a loose or expressive painting, which usually returns something busy.