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Robust Flit Crimson

#bb1c2b
Notes

Robust Flit Crimson (#BB1C2B) 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 (354°, 74%, 42%) 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 teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#bb1c2b
RGB
rgb(187, 28, 43)
HSL
hsl(354, 74%, 42%)
HWB
hwb(354 11% 27%)
OKLCH
oklch(51.1% 0.191 23.6)
P3
color(display-p3 0.6732 0.1818 0.1942)
HSV
hsv(354, 85%, 73%)
LAB
lab(40.53% 60.27 34.52)
LCH
lch(40.53% 69.45 29.80)
CMYK
cmyk(0%, 85%, 77%, 27%)

Etymology

Robust
adjective

From the Latin robustus, of oak — implying strength combined with substance. As a color modifier, robust describes saturation combined with body: a robust burgundy, a robust olive. Sits in the bold-and-warm corner alongside strong and solid, with the slightly textural implication of a color that has substance behind the pigment.

Flit
modifier

Old Norse flytja, to-move-or-shift. As a color modifier, flit implies a quick-darting-and-light-winged quality, the visual register of swallow-and-warbler-flit hand-quick-darting-and-light-winged swallow-and-warbler-and-darting-finch flitted-and-quick-darting-and-light-winged surfaces under swallow-and-warbler-and-darting-finch summer-eaves-and-hedgerow-and-meadow-edge dappled-flight-light. Sits at the modifier-and-mood end of the grid, parallel to hover and flutter 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.

#bb1c2b
Original
#514a2a
Protanopia
#786b24
Deuteranopia
#ce0024
Tritanopia
#3f3f3f
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
6.34:1
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
3.31:1

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
##BB1C2B
Display P3
Display P3
color(display-p3 0.6732 0.1818 0.1942)
P3 has visible headroomOKLCH chroma 0.191

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

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