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Resonant Faun Ruby

#d51e51
Notes

Resonant Faun Ruby (#D51E51) 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 (343°, 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
#d51e51
RGB
rgb(213, 30, 81)
HSL
hsl(343, 75%, 48%)
HWB
hwb(343 12% 16%)
OKLCH
oklch(56.6% 0.212 13.2)
HSV
hsv(343, 86%, 84%)
LAB
lab(46.54% 68.54 19.88)
LCH
lch(46.54% 71.36 16.17)
CMYK
cmyk(0%, 86%, 62%, 16%)

Etymology

Resonant
adjective

Latin resonāns, echoing — present-participle of resonate, sharing root with sonance. As a color modifier, resonant implies a saturated-and-deep-vibrating quality where the hue carries low-frequency visual richness. Sits at the bold-and-resonant end of the grid, parallel to sonorous and resounding in usage.

Faun
modifier

Latin Faunus, Roman-half-goat-rural-deity. As a color modifier, faun implies a half-goat-and-pastoral-and-Arcadian quality, the visual register of Roman-Faunus-and-Arcadian-pastoral-faun hand-half-goat-and-pastoral-and-Arcadian Roman-Faunus-and-Arcadian-pastoral-faun-and-Pan faun-and-half-goat-and-pastoral-and-Arcadian surfaces under Roman-Faunus-and-Arcadian-pastoral-faun-and-Pan Lupercalia-and-Arcadia-and-pipes-of-Pan pastoral-Arcadian-light. Sits at the modifier-and-myth end of the grid, parallel to satyr and dryad 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.

#d51e51
Original
#585752
Protanopia
#867b4c
Deuteranopia
#ea0036
Tritanopia
#494949
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
5.08:1
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
4.13:1

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