colors
Back to gallery

Bold Tunic Crimson

#a8171e
Notes

Bold Tunic Crimson (#A8171E) 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 (357°, 76%, 37%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#a8171e
RGB
rgb(168, 23, 30)
HSL
hsl(357, 76%, 37%)
HWB
hwb(357 9% 34%)
OKLCH
oklch(47.0% 0.178 25.8)
P3
color(display-p3 0.6043 0.1571 0.1479)
HSV
hsv(357, 86%, 66%)
LAB
lab(36.05% 55.64 36.17)
LCH
lch(36.05% 66.36 33.02)
CMYK
cmyk(0%, 86%, 82%, 34%)

Etymology

Bold
adjective

Old English beald, brave, courageous — a quality word that crossed over to color in the late seventeenth century. Bold describes a color that asserts itself: high saturation combined with mid lightness, where the hue presents itself without compromise. Sits at the center of the bold-bucket grid, near strong and rich. Closer to a presence word than a pigment word.

Tunic
modifier

Latin tunica, Roman-undergarment. As a color modifier, tunic implies a Roman-tunic-and-medieval-undergarment quality, the visual register of Roman-tunic-and-medieval-bliaut hand-Roman-tunic-and-medieval-undergarment Roman-tunic-and-medieval-bliaut-and-Carolingian-court tunic-and-Roman-tunic-and-medieval-undergarment surfaces under Roman-tunic-and-medieval-bliaut-and-Carolingian-court Republican-and-Carolingian-Aachen Roman-and-medieval-light. Sits at the modifier-and-textile end of the grid, parallel to chiton and peplos 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.

#a8171e
Original
#49411c
Protanopia
#6b6017
Deuteranopia
#ba001c
Tritanopia
#363636
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
7.48:1
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
2.81:1

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
##A8171E
Display P3
Display P3
color(display-p3 0.6043 0.1571 0.1479)
P3 has subtle headroomOKLCH chroma 0.178

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.

Related Colors

Canvas