colors
Back to gallery

Tough Gilt Crimson

#ac071c
Notes

Tough Gilt Crimson (#AC071C) 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 (352°, 92%, 35%) 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
#ac071c
RGB
rgb(172, 7, 28)
HSL
hsl(352, 92%, 35%)
HWB
hwb(352 3% 33%)
OKLCH
oklch(47.1% 0.188 24.9)
HSV
hsv(352, 96%, 67%)
LAB
lab(36.00% 59.22 37.54)
LCH
lch(36.00% 70.12 32.37)
CMYK
cmyk(0%, 96%, 84%, 33%)

Etymology

Tough
adjective

Old English tōh, firm / tenacious — sharing root with German zäh. As a color modifier, tough implies a saturated-and-resilient quality where the hue resists fading-and-modulation through its strong pigmentation. Sits at the bold-and-resilient end of the grid, parallel to rugged and hardy in usage.

Gilt
modifier

Old English gyldan, to-gild. As a color modifier, gilt implies a thin-gold-leaf-coating quality, the visual register of medieval-illuminated-manuscript-and-Renaissance-altarpiece hand-applied-and-burnished gold-leaf-coating gilt-and-gold-leaf surfaces under medieval-and-Renaissance hand-applied-gilt altarpiece-and-manuscript light. Sits at the modifier-and-texture end of the grid, parallel to gold and gloss 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.

#ac071c
Original
#473f1a
Protanopia
#6c6013
Deuteranopia
#be0014
Tritanopia
#2c2c2c
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
7.50:1
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
2.80:1

Related Colors

Canvas