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Authoritative Chiton Crimson

#ac2c23
Notes

Authoritative Chiton Crimson (#AC2C23) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (4°, 66%, 41%) 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
#ac2c23
RGB
rgb(172, 44, 35)
HSL
hsl(4, 66%, 41%)
HWB
hwb(4 14% 33%)
OKLCH
oklch(49.4% 0.166 28.7)
P3
color(display-p3 0.6211 0.2152 0.1687)
HSV
hsv(4, 80%, 67%)
LAB
lab(39.06% 50.95 36.65)
LCH
lch(39.06% 62.76 35.73)
CMYK
cmyk(0%, 74%, 80%, 33%)

Etymology

Authoritative
adjective

Latin auctōritāt-, authority — adjectival suffix -ive. As a color modifier, authoritative implies a saturated-and-formal-imperative quality where the hue carries decisional weight and institutional credibility. Sits at the bold-and-authoritative end of the grid, parallel to commanding and magisterial in usage.

Chiton
modifier

Greek χιτών, Hellenic-tunic. As a color modifier, chiton implies a Hellenic-tunic-and-pinned-and-pleated quality, the visual register of Hellenic-Doric-and-Ionic-chiton hand-Hellenic-tunic-and-pinned-and-pleated Hellenic-Doric-and-Ionic-chiton-and-Phidias-Parthenon chiton-and-Hellenic-tunic surfaces under Hellenic-Doric-and-Ionic-chiton-and-Phidias-Parthenon Athenian-Acropolis-and-Hellenic-court Hellenic-tunic-light. Sits at the modifier-and-textile end of the grid, parallel to peplos and tunic 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.

#ac2c23
Original
#534a21
Protanopia
#72661d
Deuteranopia
#be002b
Tritanopia
#474747
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
6.69:1
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
3.14:1

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
##AC2C23
Display P3
Display P3
color(display-p3 0.6211 0.2152 0.1687)
P3 has subtle headroomOKLCH chroma 0.166

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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