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Rich Ray Crimson

#a82521
Notes

Rich Ray Crimson (#A82521) is a true red with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (2°, 67%, 39%) 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
#a82521
RGB
rgb(168, 37, 33)
HSL
hsl(2, 67%, 39%)
HWB
hwb(2 13% 34%)
OKLCH
oklch(48.0% 0.168 27.5)
HSV
hsv(2, 80%, 66%)
LAB
lab(37.41% 51.98 35.83)
LCH
lch(37.41% 63.13 34.58)
CMYK
cmyk(0%, 78%, 80%, 34%)

Etymology

Rich
adjective

Old French riche, wealthy, abundant — applied to color since the medieval period for hues that read as plentiful in pigment. Rich red, rich brown: the implication is depth combined with saturation, a color that gives the eye more to absorb. Sits at the saturated mid-light corner of the engine's grid, slightly warmer than bold and deeper than vivid.

Ray
modifier

Latin radius, spoke-or-beam. As a color modifier, ray implies a radiant-and-spoke-of-light quality, the visual register of Bernini-Gloria-and-Baroque-altarpiece-ray hand-radiant-and-spoke-of-light Bernini-Gloria-and-Baroque-altarpiece-and-Counter-Reformation rayed-and-radiant-and-spoke-of-light surfaces under Bernini-Gloria-and-Baroque-altarpiece-and-Counter-Reformation gilded-spoke-and-altar-and-cathedral-dome heavenly-light. Sits at the modifier-and-mood end of the grid, parallel to beam and gleam in usage.

Crimson
noun

From the Old Spanish cremesin, itself from the Arabic qirmiz — the kermes scale insect, dried and ground into a brilliant carmine dye prized in the medieval Mediterranean. For centuries the most expensive red on a draper's shelf, reserved for cardinals, kings, and the cloth that gave English the word crimson. Cooler than scarlet, deeper than rose; the color of pomegranate seeds and a serious occasion.

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.

#a82521
Original
#4e461f
Protanopia
#6e621b
Deuteranopia
#b90026
Tritanopia
#414141
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
7.11:1
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
2.95:1

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