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Imperial Cochineal

#900d1e
Notes

Imperial Cochineal (#900D1E) is a deep red 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 (352°, 83%, 31%) 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 teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#900d1e
RGB
rgb(144, 13, 30)
HSL
hsl(352, 83%, 31%)
HWB
hwb(352 5% 44%)
OKLCH
oklch(41.8% 0.161 23.0)
HSV
hsv(352, 91%, 56%)
LAB
lab(30.19% 50.92 28.49)
LCH
lch(30.19% 58.34 29.23)
CMYK
cmyk(0%, 91%, 79%, 44%)

Etymology

Imperial
adjective

From the Latin imperialis, of the empire — applied to color since the medieval period for the hues reserved for sovereigns and empires: imperial purple of Tyrian dye, imperial yellow of Ming-dynasty porcelain. As a modifier, imperial implies saturation combined with the institutional weight of a color owned by a court. Sits in the bold-and-deep corner, alongside royal.

Cochineal
noun

Dactylopius coccus, the Mexican scale insect cultivated on prickly-pear cactus and harvested for its deep red carminic-acid dye. Shipped to Spain by the conquistadors, cochineal became the second most valuable export from the New World after silver. The color refers to fresh cochineal pigment: a saturated, slightly cool deep red with the brilliance of a dye thirty times stronger than kermes.

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.

#900d1e
Original
#3b361d
Protanopia
#5a5119
Deuteranopia
#9f0016
Tritanopia
#2a2a2a
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
9.28:1
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
2.26:1

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