colors
Back to gallery

Robust Vala Ruby

#910c13
Notes

Robust Vala Ruby (#910C13) 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 (357°, 85%, 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#910c13
RGB
rgb(145, 12, 19)
HSL
hsl(357, 85%, 31%)
HWB
hwb(357 5% 43%)
OKLCH
oklch(41.8% 0.163 26.6)
P3
color(display-p3 0.5205 0.1175 0.1063)
HSV
hsv(357, 92%, 57%)
LAB
lab(30.23% 51.04 35.08)
LCH
lch(30.23% 61.93 34.50)
CMYK
cmyk(0%, 92%, 87%, 43%)

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.

Vala
modifier

Old Norse völva, Norse-seeress-and-staff-bearer. As a color modifier, vala implies a Norse-seeress-and-staff-bearer-and-prophetess quality, the visual register of Norse-vala-seeress-and-staff hand-Norse-seeress-and-staff-bearer-and-prophetess Norse-vala-seeress-and-staff-and-Voluspa-Edda vala-and-Norse-seeress-and-staff-bearer surfaces under Norse-vala-seeress-and-staff-and-Voluspa-Edda Saga-Iceland-and-rune-stave seeress-prophecy-light. Sits at the modifier-and-myth end of the grid, parallel to norn and freya 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.

#910c13
Original
#3c3511
Protanopia
#5b510a
Deuteranopia
#a10012
Tritanopia
#292929
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
9.27:1
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
2.27:1

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
##910C13
Display P3
Display P3
color(display-p3 0.5205 0.1175 0.1063)
P3 has subtle headroomOKLCH chroma 0.163

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.

Related Colors

Canvas