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Imperial Slush Ruby

#97071b
Notes

Imperial Slush Ruby (#97071B) is a deep 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 (352°, 91%, 31%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#97071b
RGB
rgb(151, 7, 27)
HSL
hsl(352, 91%, 31%)
HWB
hwb(352 3% 41%)
OKLCH
oklch(42.9% 0.170 23.9)
P3
color(display-p3 0.5419 0.1140 0.1305)
HSV
hsv(352, 95%, 59%)
LAB
lab(31.38% 53.66 32.04)
LCH
lch(31.38% 62.49 30.84)
CMYK
cmyk(0%, 95%, 82%, 41%)

Etymology

Imperial
adjective

From the Latin imperialis, of the empire — applied to color since the medieval period for the hues reserved for sovereigns and empires: imperial purple of Tyrian dye, imperial yellow of Ming-dynasty porcelain. As a modifier, imperial implies saturation combined with the institutional weight of a color owned by a court. Sits in the bold-and-deep corner, alongside royal.

Slush
modifier

Imitative origin, half-melted-snow. As a color modifier, slush implies a half-melted-snow-and-grey-pavement quality, the visual register of city-pavement-and-thaw-slush hand-half-melted-snow-and-grey-pavement city-pavement-and-thaw-slush-and-Boston-Brooklyn-thaw slush-and-half-melted-snow-and-grey-pavement surfaces under city-pavement-and-thaw-slush-and-Boston-Brooklyn-thaw Boston-and-Brooklyn-and-Edinburgh-thaw urban-thaw-light. Sits at the modifier-and-weather end of the grid, parallel to thaw 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.

#97071b
Original
#3d371a
Protanopia
#5e5414
Deuteranopia
#a70012
Tritanopia
#272727
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
8.89:1
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
2.36:1

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
##97071B
Display P3
Display P3
color(display-p3 0.5419 0.1140 0.1305)
P3 has subtle headroomOKLCH chroma 0.170

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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