colors
Back to gallery

Fortified Hermes Ruby

#a91c27
Notes

Fortified Hermes Ruby (#A91C27) is a true red with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (355°, 72%, 39%) 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
#a91c27
RGB
rgb(169, 28, 39)
HSL
hsl(355, 72%, 39%)
HWB
hwb(355 11% 34%)
OKLCH
oklch(47.6% 0.175 23.8)
HSV
hsv(355, 83%, 66%)
LAB
lab(36.77% 55.05 31.72)
LCH
lch(36.77% 63.54 29.95)
CMYK
cmyk(0%, 83%, 77%, 34%)

Etymology

Fortified
adjective

Latin fortificāre, to make strong — past-participle of fortify. As a color modifier, fortified implies a saturated-and-strengthened-and-defensive quality, the deep-rich color of Vauban-style military-fortification stone-and-earth rampart-and-bastion architecture. Sits at the bold-and-fortified end of the grid, parallel to bastioned and armored.

Hermes
modifier

Greek Ἑρμῆς, messenger-of-the-Olympian-gods. As a color modifier, hermes implies a winged-sandal-and-caduceus-and-messenger quality, the visual register of Praxiteles-Hermes-and-Olympia-marble hand-winged-sandal-and-caduceus-and-messenger Praxiteles-Hermes-and-Olympia-marble-and-Hellenistic-bronze hermes-and-winged-sandal-and-caduceus surfaces under Praxiteles-Hermes-and-Olympia-marble-and-Hellenistic-bronze Olympian-pantheon-and-marketplace Mediterranean-marble-light. Sits at the modifier-and-myth end of the grid, parallel to zeus and atlas 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.

#a91c27
Original
#4a4326
Protanopia
#6c6121
Deuteranopia
#ba0022
Tritanopia
#3b3b3b
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
7.29:1
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
2.88:1

Related Colors

Canvas