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Resonant Tabard Crimson

#b11f1f
Notes

Resonant Tabard Crimson (#B11F1F) 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 (0°, 70%, 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
#b11f1f
RGB
rgb(177, 31, 31)
HSL
hsl(0, 70%, 41%)
HWB
hwb(0 12% 31%)
OKLCH
oklch(49.2% 0.181 27.1)
P3
color(display-p3 0.6375 0.1823 0.1559)
HSV
hsv(0, 82%, 69%)
LAB
lab(38.60% 56.34 38.73)
LCH
lch(38.60% 68.37 34.51)
CMYK
cmyk(0%, 82%, 82%, 31%)

Etymology

Resonant
adjective

Latin resonāns, echoing — present-participle of resonate, sharing root with sonance. As a color modifier, resonant implies a saturated-and-deep-vibrating quality where the hue carries low-frequency visual richness. Sits at the bold-and-resonant end of the grid, parallel to sonorous and resounding in usage.

Tabard
modifier

Old French tabart, herald's-or-knight's-surcoat. As a color modifier, tabard implies a herald's-tabard-and-knight's-surcoat quality, the visual register of medieval-herald's-and-knight's-tabard hand-herald's-tabard-and-knight's-surcoat medieval-herald's-and-knight's-tabard-and-College-of-Arms tabard-and-herald's-tabard surfaces under medieval-herald's-and-knight's-tabard-and-College-of-Arms College-of-Arms-and-Bayeux-Tapestry heraldic-tabard-light. Sits at the modifier-and-textile end of the grid, parallel to kilt and cape 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.

#b11f1f
Original
#4f471d
Protanopia
#736617
Deuteranopia
#c30022
Tritanopia
#3e3e3e
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
6.81:1
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
3.09:1

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
##B11F1F
Display P3
Display P3
color(display-p3 0.6375 0.1823 0.1559)
P3 has visible headroomOKLCH chroma 0.181

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

Related Colors

Canvas