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Stalwart Stole Ruby

#a31e21
Notes

Stalwart Stole Ruby (#A31E21) 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°, 69%, 38%) 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
#a31e21
RGB
rgb(163, 30, 33)
HSL
hsl(359, 69%, 38%)
HWB
hwb(359 12% 36%)
OKLCH
oklch(46.6% 0.168 25.9)
P3
color(display-p3 0.5870 0.1707 0.1561)
HSV
hsv(359, 82%, 64%)
LAB
lab(35.65% 52.55 33.70)
LCH
lch(35.65% 62.43 32.67)
CMYK
cmyk(0%, 82%, 80%, 36%)

Etymology

Stalwart
adjective

Old English stǣl-wyrðe, stable-and-worthy. As a color modifier, stalwart implies a saturated-and-loyal-and-firm quality where the hue carries the dependable-and-trustworthy visual presence of a Knight-Templar guard. Sits at the bold-and-firm end of the grid, parallel to steadfast and firm in usage.

Stole
modifier

Latin stola, Roman-women's-and-priestly-robe. As a color modifier, stole implies a Roman-women's-and-priestly-robe quality, the visual register of Roman-stola-and-Catholic-priestly-stole hand-Roman-women's-and-priestly-robe Roman-stola-and-Catholic-priestly-stole-and-Anglican-tippet stole-and-Roman-women's-and-priestly-robe surfaces under Roman-stola-and-Catholic-priestly-stole-and-Anglican-tippet Republican-Rome-and-Catholic-Mass-and-Anglican-Vespers Roman-and-Mass-light. Sits at the modifier-and-textile end of the grid, parallel to cope and robe 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.

#a31e21
Original
#49411f
Protanopia
#695e1b
Deuteranopia
#b40021
Tritanopia
#3a3a3a
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
7.60:1
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
2.76:1

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
##A31E21
Display P3
Display P3
color(display-p3 0.5870 0.1707 0.1561)
P3 has subtle headroomOKLCH chroma 0.168

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