A reddish-brown named for the nut.
Colours in photographs vary with lighting, material, camera processing and screen calibration — the named colours below are visual approximations, not exact measurements.

Green chlorophyll is broken down and reabsorbed by the tree before the leaf falls, unmasking carotenoid and tannin pigments that were in the leaf all along — colours the leaf had all summer, just hidden.
This leaf was scanned flat against a plain background for clarity; the pale scanner background itself was excluded from this palette.Photo: “Autumn American Sycamore Leaf” by Ninjatacoshell, CC BY-SA 3.0, via Wikimedia Commons.
Calculated from Chestnut’s position on the HSL wheel (hue 10°, saturation 48%, lightness 40%). Colour-wheel pairings are a design convention, not a guarantee: check any pairing in the light and material you will use it in.
Complementary
Opposite hues (180° apart) for maximum hue contrast: hue 10° → 190° on the HSL wheel.
Analogous
Neighbouring hues on the colour wheel for a low-contrast, harmonious feel: hue 10° → 340° on the HSL wheel.
Analogous
Neighbouring hues on the colour wheel for a low-contrast, harmonious feel: hue 10° → 40° on the HSL wheel.
Triadic
Three hues evenly spaced around the colour wheel for balanced contrast: hue 10° → 130° on the HSL wheel.
Triadic
Three hues evenly spaced around the colour wheel for balanced contrast: hue 10° → 250° on the HSL wheel.
Split-complementary
The two hues bracketing the complement, for contrast with less tension: hue 10° → 160° on the HSL wheel.
Split-complementary
The two hues bracketing the complement, for contrast with less tension: hue 10° → 220° on the HSL wheel.
Tetradic
Four hues at 90° steps around the colour wheel for a rich, varied palette: hue 10° → 100° on the HSL wheel.
Tetradic
Four hues at 90° steps around the colour wheel for a rich, varied palette: hue 10° → 190° on the HSL wheel.
Tetradic
Four hues at 90° steps around the colour wheel for a rich, varied palette: hue 10° → 280° on the HSL wheel.
Monochromatic
Hue held at 10°, lightness 20% against this colour's 40%.
Monochromatic
Hue held at 10°, lightness 40% against this colour's 40%.
Monochromatic
Hue held at 10°, lightness 60% against this colour's 40%.
Monochromatic
Hue held at 10°, lightness 80% against this colour's 40%.
Brick Red is the closest, at ΔE00 6.0 from chestnut: 1 points darker and 19 points more saturated. That is visibly different side by side, easily confused apart.
Brown is next, at ΔE00 6.7 from chestnut: 2 points darker, 17 points more saturated and 7° round towards red. That is clearly different, though many people would use one name for both.
Sienna is next, at ΔE00 7.7 from chestnut: 4 points lighter, 5 points more saturated and 12° round towards yellow. That is clearly different, though many people would use one name for both.
Firebrick is next, at ΔE00 8.0 from chestnut: 26 points more saturated and 4° round towards red. That is clearly different, though many people would use one name for both.
Distances are CIEDE2000 between catalogue reference values; lightness and saturation are CIELAB L* and C*. How to read a ΔE figure · Measure any two colours
Worked out from this colour’s own measurements — its lightness, saturation and undertone — rather than written for it. That is why the guidance differs from one colour to the next even when the two look similar.
This works across a range of sizes. At chroma 41 it is assertive enough to register on a small object and restrained enough not to dominate a wall.
Chroma 41 is above the usual comfort level for walls and large surfaces, so expect it to take charge. That is a legitimate choice in a room that wants a subject. Walls set the room's baseline, so this is the decision everything else answers to.
Chroma 41 sits inside the range secondary surfaces carry without taking over the room.
Chroma 41 sits inside the range furniture carry without taking over the room.
Chroma 41 sits inside the range rugs, curtains and bedding carry without taking over the room.
Chroma 41 sits inside the range trim and joinery carry without taking over the room.
Chroma 41 is exactly what an accent is for. The saturation that makes this difficult across a wall is the reason it works on a cushion, a door or a single chair.
Chroma 41 is strong enough to register and restrained enough to repeat. Two or three appearances read as intentional where one reads as an orphan.
How to distribute colour across a roomWhat colour temperature actually means · Why two bulbs at the same rating can differ
Shares the warm bias of Oak, Pine, Plywood and Light wood (ash, birch, beech), so they agree about the temperature of the room, and 27–46 points of lightness keep them readable as separate from this colour.
Sits close to Walnut, Dark wood and Reddish wood (mahogany, cherry, teak) without matching them (ΔE00 14–18) — near enough that the eye reads an attempted match and far enough that it fails. Either move decisively away or repeat the tone exactly.
The amount of timber matters as much as the tone: one piece is an accent, a floor plus joinery is the room’s dominant colour. More on working with wood tones
Shares the warm bias of Brass, Gold-tone, Chrome, Stainless steel, Black metal and Copper, so they agree about the temperature of the room, and 28–41 points of lightness keep them readable as separate from this colour.
Metal carries more attention than its area suggests, so repetition matters more than the exact finish. More on metals and mixing them
No documented mood, cultural or historical claims for this exact shade yet.
4 documented associations apply to the red family as a whole rather than to this shade: what is documented about red.
Calculated directional adjustments. Some directions converge on the same result from this starting colour — shown as one merged card with an explanation, not repeated duplicates. Generated shades link to a curated profile only when one is close enough.
Lighter
Lightness increased
Darker
Lightness decreased
Warmer & Greener & Yellower
Hue rotated toward warm (red/orange) From this starting colour, moving warmer and greener and yellower converges on the same calculated result.
Cooler & Bluer
Hue rotated toward cool (blue) From this starting colour, moving cooler and bluer converges on the same calculated result.
Redder
Hue rotated toward red
More muted
Saturation softened
More saturated
Saturation increased
A reddish brown. Used for hair, horses and wood; it overlaps auburn heavily and borders maroon as it reddens.
Usage of this name varies. See every name this colour falls under · Where chestnut ends and its neighbour begins
Approximate, from each printing condition’s published aim values; a printer’s own profile is the final word. See the full print gamut check.
CMYK is an approximate device conversion, not a calibrated print value — see methodology.
Convert this colour to another format →
Common design-industry reference value for the named colour.
vs. white text
6.60:1 — AA
vs. black text
3.18:1 — fails
Confidence: medium · Qualification: identity_only, technically_qualified
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