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Stygian Soldanella

#570a4c
Notes

Stygian Soldanella (#570A4C) 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 (309°, 79%, 19%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#570a4c
RGB
rgb(87, 10, 76)
HSL
hsl(309, 79%, 19%)
HWB
hwb(309 4% 66%)
OKLCH
oklch(32.0% 0.130 335.1)
HSV
hsv(309, 89%, 34%)
LAB
lab(19.08% 40.34 -19.97)
LCH
lch(19.08% 45.01 333.66)
CMYK
cmyk(0%, 89%, 13%, 66%)

Etymology

Stygian
adjective

From the Greek Styx, the river of the underworld — used as an adjective in English since the seventeenth century to mean infernally dark. Stygian is the literary register for absolute darkness, deeper than inky and warmer than vantablack. Almost always reaches for poetic weight rather than precise reflectance.

Soldanella
noun

European alpine snowbells (Soldanella alpina) — small alpine perennials whose fringed bell-flowers emerge through the spring snowmelt across the Alps and Carpathians. Soldanella color refers to a fully opened Soldanella alpina fringed bell-flower: a saturated, slightly cool deep violet with the velvet finish of finely fringed bell-corolla. The genus name comes from the Italian soldo (small coin), after the round-leaf shape.

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.

#570a4c
Original
#0a274e
Protanopia
#28324a
Deuteranopia
#5c122b
Tritanopia
#1f1f1f
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
13.52:1
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
1.55:1

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