Seurat's Oil Sketch for La Grande Jatte

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9 details, each checked against a close-up of the picture.

1. Central Rust-Red Figure

   The red dress is composed of broad, vertical strokes of orange-red and burnt sienna.

   The crop centers on a standing figure rendered in rust-red drapery, painted with loose, visible, predominantly vertical brushstrokes that range from bright orange-red highlights to deeper burnt sienna mid-tones. Cool blue-violet notes are threaded through the dress folds, functioning as shadows rather than as background peeking through. The figure's edges are not drawn but implied by the abrupt juxtaposition of warm red strokes against the surrounding green, ochre, and ultramarine-touched grass; the silhouette reads as a mosaic of broken-color patches. Background trees register as dabs of ochre, orange, and dark green, with a pale sky band across the top, while a heavier maroon-brown shadow grounds the figure's lower right.

2. Foreground Grass Texture

   The grass is rendered with short, diagonal, cross-hatched strokes of green, yellow, and blue.

   The crop is dominated by a dense field of green paint in the lower two-thirds, built from short, overlapping strokes that run on multiple diagonals. Greens range from deep forest tones (~#1f3a26) in the recessed pockets to brighter yellow-greens (~#8fa83a) where thicker, lighter strokes sit on top. Cool blue notes (~#2c5070) are scattered through the mid-zone, and a single small red-orange dab (~#a83828) sits upper-center, the only warm note in the grass itself. A dark vertical mass (the rust-red gown from context) intrudes along the left edge, its strokes longer and more vertical, contrasting the busy cross-hatch of the turf. Strokes are laid wet-into-wet in places but show slight ridges, and edges between marks are softened by adjacent wet color rather than left crisp. The upper-left wedge of warm ochre and orange reads as out-of-focus foliage catching diffuse light, not as grass.

3. Seated Figure in Purple

   The dress uses deep violet and magenta hues with light pink highlights on the shoulder.

   The crop isolates a seated figure whose gown reads as a layered mosaic of deep violet, plum, and magenta, brushed in vertical and diagonal strokes that bleed into a green-yellow background. Edges between dress and ground are deliberately unfinished — saturated green strokes sit inside the silhouette and violet strokes extend beyond the contour, so the figure emerges through color contrast rather than a drawn outline. A small zone on the upper shoulder (roughly crop-local 0.55, 0.20) is lifted with a pale dusty pink scumble, but the highlight is muted and broken rather than crisp. Values across the dress stay in a narrow mid-to-dark range; there is no strong shadow line, just warmer magenta passages modeling the skirt's volume.

4. The Standing Man's Silhouette

   The right edge of the man's suit is a soft, blurred boundary against the green background.

   A tall male figure in dark dress dominates the crop, his silhouette extending nearly the full vertical span. The suit reads as a deep indigo-violet mass composed of broken, vertical-to-diagonal strokes that carry warm reddish and cool blue notes within a single garment shape. Against the surrounding greens, the right edge is not a contour but a series of overlapping, unblended strokes: cool green and teal hatch marks cross over the dark suit, and the suit's own purple-blue strokes extend slightly into the foliage zone. At the lower right, the trouser leg is defined by thin verticals of crimson, indigo and olive laid side by side, with bare canvas and mixed greens breaking through. The top hat is a small, dense black-purple block with no internal modeling.

5. Hatted Woman's Profile

   The face is a simplified mass of pale ochre with a dark smudge for the eye and lip.

   The crop is dominated by a heavy, roughly triangular mass of very dark blue-black at the top, which sits directly on a wedge of pale, scumbled ochre that reads as a face in profile. Within the ochre, a single small horizontal smudge of darker tone marks the eye area, and a thinner dark stroke beneath suggests the mouth. The edge where the dark hat mass meets the pale face is not a clean line but a broken, stair-stepped transition where dark and light strokes interlock. Below the face, a broad area of rust-red and brownish-red brushwork tilts diagonally, edged on the right by cooler greens and blues of the surrounding foliage.

6. Seated Figures Left

   The figures on the far left are loosely sketched with minimal definition of limbs.

   The crop reveals two roughly indicated seated forms on the left, built from broad, overlapping patches of rust, violet, and deep blue-green rather than drawn contours; limbs are absent as separate shapes and emerge only as broken color zones where the figure meets the surrounding grass. A third seated figure occupies the right half, with a dark crimson hat/mass and a navy torso suggested by a few wide strokes, the chair or bench implied by a horizontal smear of ochre and pink. Edges between figure and ground are deliberately left wet and unblended, with mid-value violets serving as transitional halos. Highlights on the upper-left are kept thin and pinkish, while shadow pockets are loaded with cool blue-purple, giving the forms a faceted rather than modeled look.

7. Foreground Figure Bottom Left

   The figure's clothing is rendered as a dark, scumbled mass of navy and purple.

   The crop is dominated by a dark, scumbled mass of pigment occupying the central and lower portions, where navy blue, deep purple, and touches of rust-red are dragged and layered over one another in loose, gestural strokes. The edges where this dark form meets the green background are soft and broken, with no hard contour — the green is dragged into the dark mass and vice versa. Value contrast is low across the figure itself, with small flecks of lighter blue and pink acting as scumbled highlights rather than modeled form. The green surrounding the figure shows horizontal and diagonal strokes in a brighter yellow-green, laid on top of darker olive underlayers.

8. Distant Water Band

   The water is painted with horizontal streaks of light blue, white, and pale violet.

   The upper two-thirds of this crop is a watery band built from short, mostly horizontal strokes of light cerulean blue, off-white, pale lavender-violet and occasional salmon-pink, layered wet-into-wet so that warmer underlayers (pink, ochre) peek through the cooler top passes. Toward the top edge the marks lengthen into cream and straw verticals, suggesting reeds or a far bank. Lower down the horizontal energy is interrupted by a dark plum vertical dab (a figure's reflected silhouette) and a cluster of purple-mauve flecks at the very bottom (shadow or foliage). Edges are soft and unblended: every stroke keeps its own boundary, so the water reads as broken color rather than smooth surface.

9. Green/Blue Transition

   The transition between grass and river includes streaks of turquoise and pale green.

   The crop captures the middle-left zone where two lavender-purple vertical strokes (tree trunks) rise from a dense field of green grass into a turquoise wash at the upper-left. The grass is built from short, varied greens — pale mint, yellow-green, and deeper olive — applied as distinct dashes and commas rather than blended. To the left, the turquoise river area shows horizontal, broken strokes of pale cyan and white-blue, with a soft, undefined edge where water meets grass. Lower right, a diagonal band of rust-red and terracotta (suggesting either ground or a draped fabric) edges into the green with a crisp but gestural boundary.

Oil Sketch for "A Sunday on La Grande Jatte, 1884" in context

1. Georges Seurat, Oil Sketch for "A Sunday on La Grande Jatte, 1884", 1981.15: object record, label text, provenance and publication history . Art Institute of Chicago (public API)
2. A Sunday Afternoon on the Island of La Grande Jatte . Wikipedia
3. Georges Seurat . Wikipedia
4. Neo-impressionism . Wikipedia
5. Maximilien Luce . Wikipedia