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Electrifying Hessian

#8fa31e
Notes

Electrifying Hessian (#8FA31E) is a true yellow 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 (69°, 69%, 38%) 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#8fa31e
RGB
rgb(143, 163, 30)
HSL
hsl(69, 69%, 38%)
HWB
hwb(69 12% 36%)
OKLCH
oklch(67.7% 0.149 118.4)
HSV
hsv(69, 82%, 64%)
LAB
lab(63.45% -23.55 60.33)
LCH
lch(63.45% 64.76 111.33)
CMYK
cmyk(12%, 0%, 82%, 36%)

Etymology

Electrifying
adjective

Greek ēléktron, amber — present-participle of electrify, named after the static-electricity property of rubbed amber. As a color modifier, electrifying implies a saturated-and-shocking-and-active quality, the bright color of Tesla-coil high-voltage atmospheric-discharge emission. Sits at the bright-and-active end of the grid, parallel to charged and neon in usage.

Hessian
noun

A coarse jute fabric — used for sacking, packaging, and rough textile applications. Originally manufactured in Hesse (Germany), where the Hessian troops of the American Revolution wore yellow uniforms. Hessian refers to undyed natural hessian fabric: a soft, slightly muted warm tan with the textured matte finish of bast-fiber weave. Slightly warmer than burlap.

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.

#8fa31e
Original
#ae9900
Protanopia
#ac9a2c
Deuteranopia
#989a8b
Tritanopia
#959595
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
2.83:1
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
7.43:1

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