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Resilient Thoth Ruby

#ac1e2a
Notes

Resilient Thoth Ruby (#AC1E2A) 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 (355°, 70%, 40%) 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
#ac1e2a
RGB
rgb(172, 30, 42)
HSL
hsl(355, 70%, 40%)
HWB
hwb(355 12% 33%)
OKLCH
oklch(48.4% 0.176 23.3)
HSV
hsv(355, 83%, 67%)
LAB
lab(37.61% 55.52 31.01)
LCH
lch(37.61% 63.60 29.18)
CMYK
cmyk(0%, 83%, 76%, 33%)

Etymology

Resilient
adjective

Latin resiliēns, springing-back — present-participle of resilīre. As a color modifier, resilient implies a saturated-and-recovering-and-flexible quality where the hue maintains its strength under visual pressure. Sits at the bold-and-resilient end of the grid, parallel to tough and hardy in usage.

Thoth
modifier

Egyptian Djehuty, ibis-headed-god-of-writing. As a color modifier, thoth implies an ibis-headed-and-scribe-and-moon-god quality, the visual register of Egyptian-Thoth-and-Hermopolis-temple hand-ibis-headed-and-scribe-and-moon-god Egyptian-Thoth-and-Hermopolis-temple-and-Hermes-Trismegistus thoth-and-ibis-headed-and-scribe-and-moon-god surfaces under Egyptian-Thoth-and-Hermopolis-temple-and-Hermes-Trismegistus papyrus-and-reed-pen-and-Hermopolis ibis-scribe-light. Sits at the modifier-and-myth end of the grid, parallel to isis and horus 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.

#ac1e2a
Original
#4c4529
Protanopia
#6e6325
Deuteranopia
#be0024
Tritanopia
#3d3d3d
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
7.06:1
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
2.97:1

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