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Crepuscular Brioche

#2d1b03
Notes

Crepuscular Brioche (#2D1B03) is a deep 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 (34°, 88%, 9%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary azure. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#2d1b03
RGB
rgb(45, 27, 3)
HSL
hsl(34, 88%, 9%)
HWB
hwb(34 1% 82%)
OKLCH
oklch(24.0% 0.047 71.3)
P3
color(display-p3 0.1662 0.1089 0.0268)
HSV
hsv(34, 93%, 18%)
LAB
lab(11.61% 6.15 16.19)
LCH
lch(11.61% 17.31 69.21)
CMYK
cmyk(0%, 40%, 93%, 82%)

Etymology

Crepuscular
adjective

Latin crepusculāris, of twilight — derived from crepusculum (twilight). As a color modifier, crepuscular implies the deep blue-violet darkness of civil-twilight period between sunset and nightfall. Sits at the deep-and-cool end of the grid, where the hue carries the Belt of Venus atmospheric-scattering quality of clear-sky horizon at dusk.

Brioche
noun

The French enriched bread — egg- and butter-rich dough that produces a soft, golden, slightly sweet loaf used in brioche à tête, pain au lait, and kouign-amann. The color refers to the inside of a freshly baked brioche: a soft, slightly warm pale yellow with the matte finish of egg-rich crumb.

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

Click any swatch to explore

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.

#2d1b03
Original
#211c01
Protanopia
#252003
Deuteranopia
#321616
Tritanopia
#1d1d1d
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).
AAAon White
16.54:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
1.27:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##2D1B03
Display P3
Display P3
color(display-p3 0.1662 0.1089 0.0268)
Inside sRGBOKLCH chroma 0.047

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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