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Authoritative Squire Ruby

#d81f56
Notes

Authoritative Squire Ruby (#D81F56) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (342°, 75%, 48%) 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 teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#d81f56
RGB
rgb(216, 31, 86)
HSL
hsl(342, 75%, 48%)
HWB
hwb(342 12% 15%)
OKLCH
oklch(57.3% 0.214 11.9)
HSV
hsv(342, 86%, 85%)
LAB
lab(47.31% 69.40 17.92)
LCH
lch(47.31% 71.68 14.48)
CMYK
cmyk(0%, 86%, 60%, 15%)

Etymology

Authoritative
adjective

Latin auctōritāt-, authority — adjectival suffix -ive. As a color modifier, authoritative implies a saturated-and-formal-imperative quality where the hue carries decisional weight and institutional credibility. Sits at the bold-and-authoritative end of the grid, parallel to commanding and magisterial in usage.

Squire
modifier

Old French escuyer, shield-bearer. As a color modifier, squire implies a knight's-attendant-and-page-of-arms quality, the visual register of English-and-French-Squire hand-forged shield-and-stirrup-and-tabard knight's-attendant-and-page-of-arms surfaces under English-and-French-Squire hand-forged shield-and-stirrup ceremonial-court light. Sits at the modifier-and-cultural end of the grid, parallel to knight and page 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

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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.

#d81f56
Original
#595857
Protanopia
#877d51
Deuteranopia
#ed0039
Tritanopia
#4a4a4a
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).
AAon White
4.94:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
4.25:1

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