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Combustive Chrysoberyl

#64b33f
Notes

Combustive Chrysoberyl (#64B33F) is a true green with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (101°, 48%, 47%) 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#64b33f
RGB
rgb(100, 179, 63)
HSL
hsl(101, 48%, 47%)
HWB
hwb(101 25% 30%)
OKLCH
oklch(69.2% 0.170 137.2)
HSV
hsv(101, 65%, 70%)
LAB
lab(65.99% -45.14 50.10)
LCH
lch(65.99% 67.43 132.02)
CMYK
cmyk(44%, 0%, 65%, 30%)

Etymology

Combustive
adjective

Latin combūstus, burnt — adjectival suffix -ive, derived from com-burere (to burn-up). As a color modifier, combustive implies a saturated-and-burning-active quality, the bright color of blast-furnace-and-foundry combustion-chamber emission. Sits at the bright-and-warm end of the grid, parallel to fiery and blazing in usage.

Chrysoberyl
noun

A beryllium-aluminum oxide gem — particularly the chartreuse-green variety distinguished from emerald by its different chemistry. Mined principally in Brazil, Sri Lanka, and Madagascar. The color refers to a faceted Brazilian chrysoberyl: a saturated, slightly cool yellow-green with the gem's signature high refractive index.

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.

#64b33f
Original
#b9a530
Protanopia
#ae9e49
Deuteranopia
#60ad9b
Tritanopia
#9a9a9a
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
2.60:1
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
8.06:1

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