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Senatorial Tribe Crimson

#ab1c1f
Notes

Senatorial Tribe Crimson (#AB1C1F) is a true red with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (359°, 72%, 39%) 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
#ab1c1f
RGB
rgb(171, 28, 31)
HSL
hsl(359, 72%, 39%)
HWB
hwb(359 11% 33%)
OKLCH
oklch(47.9% 0.177 26.4)
P3
color(display-p3 0.6156 0.1709 0.1529)
HSV
hsv(359, 84%, 67%)
LAB
lab(37.10% 55.36 36.84)
LCH
lch(37.10% 66.50 33.64)
CMYK
cmyk(0%, 84%, 82%, 33%)

Etymology

Senatorial
adjective

Latin senātōrius, of the senator — adjectival suffix. As a color modifier, senatorial implies a saturated-and-aristocratic-and-Roman-Republic quality, the deep-rich color of Roman-Senate toga praetexta purple-bordered ceremonial-citizen-class livery. Sits at the bold-and-aristocratic end of the grid, parallel to patrician and imperial.

Tribe
modifier

Latin tribus, one-of-three-original-tribes. As a color modifier, tribe implies a kin-and-clan-and-extended-family quality, the visual register of pre-modern-tribal-and-kinship hand-built tent-and-totem-and-elder-council clan-and-kinship surfaces under pre-modern tribal-and-kinship hand-built encampment-and-elder-council firelight. Sits at the modifier-and-cultural end of the grid, parallel to clan and kin 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.

#ab1c1f
Original
#4c441d
Protanopia
#6e6218
Deuteranopia
#bd0020
Tritanopia
#3b3b3b
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
7.20:1
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
2.92:1

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
##AB1C1F
Display P3
Display P3
color(display-p3 0.6156 0.1709 0.1529)
P3 has subtle headroomOKLCH chroma 0.177

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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