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Magisterial Capricorn Ruby

#a0191d
Notes

Magisterial Capricorn Ruby (#A0191D) 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 (358°, 73%, 36%) 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
#a0191d
RGB
rgb(160, 25, 29)
HSL
hsl(358, 73%, 36%)
HWB
hwb(358 10% 37%)
OKLCH
oklch(45.6% 0.169 26.1)
HSV
hsv(358, 84%, 63%)
LAB
lab(34.52% 52.86 34.66)
LCH
lch(34.52% 63.21 33.25)
CMYK
cmyk(0%, 84%, 82%, 37%)

Etymology

Magisterial
adjective

Latin magisterium, teacher's office — adjectival suffix -al. As a color modifier, magisterial implies a saturated-and-authoritative-and-formal quality, the deep-rich color of Qing-dynasty civil-magistrate court-and-ritual textiles and Imperial-Examination scholar-class livery. Sits at the bold-and-authoritative end of the grid, parallel to authoritative and commanding.

Capricorn
modifier

Latin capricornus, horned-goat-of-the-zodiac. As a color modifier, capricorn implies a sea-goat-and-earth-sign-and-Saturn-ruled-cardinal-earth quality, the visual register of Hellenic-Capricorn-and-Pan-sea-goat hand-sea-goat-and-earth-sign-and-Saturn-ruled-cardinal-earth Hellenic-Capricorn-and-Pan-sea-goat-and-Babylonian-Suhurmašu capricorn-and-sea-goat-and-earth-sign surfaces under Hellenic-Capricorn-and-Pan-sea-goat-and-Babylonian-Suhurmašu winter-solstice-and-December-and-January cardinal-earth-sign-light. Sits at the modifier-and-zodiac end of the grid, parallel to sagittarius and aquarius 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.

#a0191d
Original
#463f1b
Protanopia
#675b16
Deuteranopia
#b1001d
Tritanopia
#363636
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
7.92:1
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
2.65:1

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