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Saturated Pile Crimson

#b21223
Notes

Saturated Pile Crimson (#B21223) is a true 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 (354°, 82%, 38%) places it in the highly saturated band at a mid 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
#b21223
RGB
rgb(178, 18, 35)
HSL
hsl(354, 82%, 38%)
HWB
hwb(354 7% 30%)
OKLCH
oklch(48.8% 0.189 24.2)
HSV
hsv(354, 90%, 70%)
LAB
lab(37.88% 59.50 35.83)
LCH
lch(37.88% 69.45 31.06)
CMYK
cmyk(0%, 90%, 80%, 30%)

Etymology

Saturated
adjective

From the Latin saturatus, past participle of saturare, to fill. A technical color term in modern usage — saturation is one of the three axes of HSL (with hue and lightness). As a modifier, saturated implies that the hue is at or near its maximum chromatic intensity. Sits at the bold-and-bright top of the grid.

Pile
modifier

Old French pile, raised-cut-thread. As a color modifier, pile implies a raised-cut-thread-and-velvet quality, the visual register of velvet-and-corduroy-and-pile-rug hand-cut-and-raised-thread velvet-and-corduroy-and-pile-rug-textile surfaces under velvet-and-corduroy-and-pile-rug textile workshop-light. Sits at the modifier-and-texture end of the grid, parallel to plush and nap 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.

#b21223
Original
#4b4422
Protanopia
#71651b
Deuteranopia
#c5001c
Tritanopia
#353535
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
6.99:1
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
3.00:1

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