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Luminous Seychelles

#64d280
Notes

Luminous Seychelles (#64D280) is a true green 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 (135°, 55%, 61%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#64d280
RGB
rgb(100, 210, 128)
HSL
hsl(135, 55%, 61%)
HWB
hwb(135 39% 18%)
OKLCH
oklch(77.9% 0.155 149.8)
HSV
hsv(135, 52%, 82%)
LAB
lab(76.29% -49.25 31.27)
LCH
lch(76.29% 58.34 147.59)
CMYK
cmyk(52%, 0%, 39%, 18%)

Etymology

Luminous
adjective

Latin lūminōsus, full of light — adjectival suffix -ous, derived from lūmen (light). As a color modifier, luminous implies a saturated-and-light-emitting quality where the hue carries internal-glow visual register. Sits at the bright-and-saturated end of the grid, parallel to radiant and resplendent in usage.

Seychelles
noun

The Indian Ocean granite-island archipelago — and the saturated turquoise of Seychellois lagoons at Anse Source d'Argent on La Digue. Seychelles refers to the granite-and-water boundary at Anse Source d'Argent: a saturated, slightly cool deep blue-green with the optical complexity of shallow water over weathered granite.

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.

#64d280
Original
#d3c37a
Protanopia
#c4b885
Deuteranopia
#4ccfbd
Tritanopia
#b5b5b5
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).
Failon White
1.90:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
11.07:1

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