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Solid Mistral Ruby

#931717
Notes

Solid Mistral Ruby (#931717) 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 (0°, 73%, 33%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#931717
RGB
rgb(147, 23, 23)
HSL
hsl(0, 73%, 33%)
HWB
hwb(0 9% 42%)
OKLCH
oklch(42.9% 0.159 27.2)
P3
color(display-p3 0.5286 0.1427 0.1200)
HSV
hsv(0, 84%, 58%)
LAB
lab(31.53% 49.36 34.22)
LCH
lch(31.53% 60.06 34.73)
CMYK
cmyk(0%, 84%, 84%, 42%)

Etymology

Solid
adjective

Latin solidus, firm, dense — used as a color modifier since the seventeenth century for hues that read as continuous and unbroken: a solid blue is one with no variation across the surface. Implies high saturation combined with optical density. Sits in the bold-bucket alongside strong and robust, slightly more focused on uniformity.

Mistral
modifier

Provençal mistral, cold-northwest-wind-of-Provence. As a color modifier, mistral implies a cold-Provençal-and-Rhône-Valley-wind quality, the visual register of Provençal-and-Rhône-Valley-mistral hand-cold-Provençal-and-Rhône-Valley-wind Provençal-and-Rhône-Valley-mistral-and-Alpilles mistral-and-cold-Provençal-and-Rhône-Valley-wind surfaces under Provençal-and-Rhône-Valley-mistral-and-Alpilles Avignon-and-Saint-Rémy-and-Camargue cold-Rhône-Valley-wind-light. Sits at the modifier-and-weather end of the grid, parallel to sirocco and gust 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.

#931717
Original
#403915
Protanopia
#5e5410
Deuteranopia
#a30019
Tritanopia
#313131
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
8.84:1
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
2.38:1

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
##931717
Display P3
Display P3
color(display-p3 0.5286 0.1427 0.1200)
P3 has subtle headroomOKLCH chroma 0.159

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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