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Hellish Alexandria

#550d57
Notes

Hellish Alexandria (#550D57) is a deep violet 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 (298°, 74%, 20%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#550d57
RGB
rgb(85, 13, 87)
HSL
hsl(298, 74%, 20%)
HWB
hwb(298 5% 66%)
OKLCH
oklch(32.5% 0.135 326.9)
HSV
hsv(298, 85%, 34%)
LAB
lab(19.67% 40.93 -26.52)
LCH
lch(19.67% 48.77 327.06)
CMYK
cmyk(2%, 85%, 0%, 66%)

Etymology

Hellish
adjective

Old English helle, hell — adjectival suffix -ish. As a color modifier, hellish implies the deep-glowing-furnace-darkness of Dante-and-Bosch infernal-imagery, where heat and shadow combine in the painted-and-poetic Christian underworld. Sits at the deep-and-warm end of the grid, parallel to infernal and warmer than plutonian.

Alexandria
noun

Hellenistic Egyptian capital founded by Alexander the Great (332 BCE) — the Library of Alexandria's parchment dye works produced Tyrian purple manuscript-binding leather for the imperial Roman library. Alexandria color refers to a Library of Alexandria-bound Tyrian parchment fragment: a saturated, slightly cool deep violet with the matte finish of multi-bath Murex shellfish dye on tanned Egyptian goatskin.

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.

#550d57
Original
#002a59
Protanopia
#213355
Deuteranopia
#581b32
Tritanopia
#222222
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
13.28:1
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
1.58:1

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