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Rousing Yanagi

#81b517
Notes

Rousing Yanagi (#81B517) is a true lime with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (80°, 77%, 40%) places it in the highly saturated band at a mid 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#81b517
RGB
rgb(129, 181, 23)
HSL
hsl(80, 77%, 40%)
HWB
hwb(80 9% 29%)
OKLCH
oklch(71.0% 0.179 127.8)
HSV
hsv(80, 87%, 71%)
LAB
lab(67.86% -37.99 65.44)
LCH
lch(67.86% 75.67 120.14)
CMYK
cmyk(29%, 0%, 87%, 29%)

Etymology

Rousing
adjective

Old English rūsan, to rush — present-participle of rouse. As a color modifier, rousing implies a saturated-and-wakening-and-active quality, the bright color of dawn-chorus-and-morning-bell atmospheric-and-aural stimulation. Sits at the bright-and-active end of the grid, parallel to awakening and invigorating in usage.

Yanagi
noun

Salix — the willow in Japanese, and the soft yellow-green of fresh willow leaves in spring. Yanagi-iro is a traditional Japanese fashion color, distinct from moegi by its slightly cooler shift. The color refers to a fresh willow leaf along a Kyoto canal: a soft, slightly cool yellow-green with the satin finish of new lanceolate foliage.

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.

#81b517
Original
#bfa800
Protanopia
#b7a42c
Deuteranopia
#86ac9a
Tritanopia
#9f9f9f
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
2.45:1
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
8.56:1

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