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Robust Quince

#a33917
Notes

Robust Quince (#A33917) is a true orange with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (15°, 75%, 36%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#a33917
RGB
rgb(163, 57, 23)
HSL
hsl(15, 75%, 36%)
HWB
hwb(15 9% 36%)
OKLCH
oklch(49.2% 0.147 37.1)
HSV
hsv(15, 86%, 64%)
LAB
lab(39.20% 42.24 42.32)
LCH
lch(39.20% 59.79 45.05)
CMYK
cmyk(0%, 65%, 86%, 36%)

Etymology

Robust
adjective

From the Latin robustus, of oak — implying strength combined with substance. As a color modifier, robust describes saturation combined with body: a robust burgundy, a robust olive. Sits in the bold-and-warm corner alongside strong and solid, with the slightly textural implication of a color that has substance behind the pigment.

Quince
noun

Cydonia oblonga, the rosaceous fruit cooked into Iberian membrillo paste, Middle Eastern abrikiel preserves, and English quince jelly. Too astringent to eat raw. The color refers to a ripe quince on the tree: a soft, slightly muted yellow-orange with the matte finish of fuzzy fruit skin. Drier than apricot.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

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Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#a33917
Original
#584d11
Protanopia
#726511
Deuteranopia
#b41a33
Tritanopia
#4d4d4d
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon White
6.66:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.15:1

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