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Saturated Hail Ruby

#9b181b
Notes

Saturated Hail Ruby (#9B181B) 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 (359°, 73%, 35%) 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
#9b181b
RGB
rgb(155, 24, 27)
HSL
hsl(359, 73%, 35%)
HWB
hwb(359 9% 39%)
OKLCH
oklch(44.5% 0.165 26.4)
P3
color(display-p3 0.5575 0.1505 0.1345)
HSV
hsv(359, 85%, 61%)
LAB
lab(33.36% 51.59 34.30)
LCH
lch(33.36% 61.95 33.62)
CMYK
cmyk(0%, 85%, 83%, 39%)

Etymology

Saturated
adjective

From the Latin saturatus, past participle of saturare, to fill. A technical color term in modern usage — saturation is one of the three axes of HSL (with hue and lightness). As a modifier, saturated implies that the hue is at or near its maximum chromatic intensity. Sits at the bold-and-bright top of the grid.

Hail
modifier

Old English hægl, hail-stones. As a color modifier, hail implies a hail-stone-and-clattering-and-spring-thunderstorm quality, the visual register of prairie-and-summer-thunderhead-hail hand-hail-stone-and-clattering-and-spring-thunderstorm prairie-and-summer-thunderhead-hail-and-Great-Plains hail-and-hail-stone-and-clattering surfaces under prairie-and-summer-thunderhead-hail-and-Great-Plains Tornado-Alley-and-Kansas-Oklahoma-storm-cell prairie-thunderhead-light. Sits at the modifier-and-weather end of the grid, parallel to sleet and flurry in usage.

Ruby
noun

From the Latin ruber — simply, red. The gemstone is a chromium-tinged corundum, harder than anything in nature except diamond, and so saturated that a fine Burmese pigeon's blood ruby at auction outpaces a comparable diamond by weight. The color borrows the gem's confidence: a clear, glassy red without the brown of garnet or the blue of crimson.

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.

#9b181b
Original
#443c19
Protanopia
#635814
Deuteranopia
#ab001b
Tritanopia
#343434
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
8.27:1
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
2.54:1

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
##9B181B
Display P3
Display P3
color(display-p3 0.5575 0.1505 0.1345)
P3 has subtle headroomOKLCH chroma 0.165

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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