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Plutonian Lavender

#4e2588
Notes

Plutonian Lavender (#4E2588) is a deep indigo with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (265°, 57%, 34%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#4e2588
RGB
rgb(78, 37, 136)
HSL
hsl(265, 57%, 34%)
HWB
hwb(265 15% 47%)
OKLCH
oklch(37.9% 0.155 297.4)
HSV
hsv(265, 73%, 53%)
LAB
lab(25.92% 40.65 -48.14)
LCH
lch(25.92% 63.00 310.18)
CMYK
cmyk(43%, 73%, 0%, 47%)

Etymology

Plutonian
adjective

From Pluto, the Roman god of the underworld (Greek Plouton). As a color modifier, plutonian implies the cool deep darkness of the underworld realms, with literary-classical register. Sits at the deep-and-cool end of the grid, parallel to Hadean and cooler than infernal.

Lavender
noun

Lavandula angustifolia, the Mediterranean shrub cultivated since Roman times for fragrance and ornament — the symbol of Provence's Plateau de Valensole, where July fields look painted. The color refers to a fresh lavender flower spike at peak bloom: a soft, slightly muted pale blue-violet with the matte finish of small clustered florets. Lighter than periwinkle, cooler than mauve, with the aromatic weight of essential oil and dried sachet alike.

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.

#4e2588
Original
#003e8b
Protanopia
#003c86
Deuteranopia
#3f3e54
Tritanopia
#353535
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
10.80:1
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
1.94:1

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