colors
Back to gallery

Tenacious Hover Crimson

#a81f18
Notes

Tenacious Hover Crimson (#A81F18) 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 (3°, 75%, 38%) 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
#a81f18
RGB
rgb(168, 31, 24)
HSL
hsl(3, 75%, 38%)
HWB
hwb(3 9% 34%)
OKLCH
oklch(47.5% 0.173 28.8)
HSV
hsv(3, 86%, 66%)
LAB
lab(36.69% 53.51 40.01)
LCH
lch(36.69% 66.81 36.79)
CMYK
cmyk(0%, 82%, 86%, 34%)

Etymology

Tenacious
adjective

Latin tenāx, holding-fast — adjectival suffix -ous. As a color modifier, tenacious implies a saturated-and-clinging quality where the hue grips its substrate with stubborn pigmentation. Sits at the bold-and-resilient end of the grid, parallel to unyielding and adamant in usage.

Hover
modifier

Middle English hoveren, to-remain-suspended. As a color modifier, hover implies a suspended-and-floating-and-hesitant quality, the visual register of kestrel-and-hummingbird-hover hand-suspended-and-floating-and-hesitant kestrel-and-hummingbird-and-dragonfly hovered-and-suspended-and-floating-and-hesitant surfaces under kestrel-and-hummingbird-and-dragonfly heat-shimmer-and-summer-meadow-and-cliff-edge mid-air-light. Sits at the modifier-and-mood end of the grid, parallel to float and flit 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.

#a81f18
Original
#4c4315
Protanopia
#6d610f
Deuteranopia
#ba0020
Tritanopia
#3c3c3c
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
7.31:1
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
2.87:1

Related Colors

Canvas