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Crisp Cloister

#28021b
Notes

Crisp Cloister (#28021B) is a deep magenta 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 (321°, 90%, 8%) 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#28021b
RGB
rgb(40, 2, 27)
HSL
hsl(321, 90%, 8%)
HWB
hwb(321 1% 84%)
OKLCH
oklch(18.9% 0.074 344.7)
P3
color(display-p3 0.1408 0.0167 0.1023)
HSV
hsv(321, 95%, 16%)
LAB
lab(5.18% 21.61 -6.58)
LCH
lch(5.18% 22.59 343.07)
CMYK
cmyk(0%, 95%, 33%, 84%)

Etymology

Crisp
adjective

Latin crispus, curled — drifted in English from the curled hair sense to fresh and clean. As a color modifier, crisp implies saturation combined with optical clarity, with no haze or film between the eye and the surface. Used across the bright and crisp buckets where the hue is fresh-looking. Slightly less assertive than vivid.

Cloister
noun

Latin claustrum, enclosed-space — the deep-cool-gray monastic-courtyard arcade of medieval European Cistercian and Benedictine monastic architecture, where the brothers-and-sisters processed in silent prayer between the opus Dei (work of God) hours. Cloister color refers to a Le-Thoronet-Abbey 12th-century cloister-arcade face in November-overcast light: a dark cool-gray with the matte finish of Provençal-Triassic-limestone hand-quarried-and-hand-cut Cistercian-monastic-architecture.

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.

#28021b
Original
#050d1c
Protanopia
#11141a
Deuteranopia
#2b020d
Tritanopia
#0c0c0c
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
18.84:1
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
1.11:1

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
##28021B
Display P3
Display P3
color(display-p3 0.1408 0.0167 0.1023)
Inside sRGBOKLCH chroma 0.074

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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