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Forceful Grün

#55a317
Notes

Forceful Grün (#55A317) is a true lime 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 (93°, 75%, 36%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#55a317
RGB
rgb(85, 163, 23)
HSL
hsl(93, 75%, 36%)
HWB
hwb(93 9% 36%)
OKLCH
oklch(64.0% 0.181 135.6)
HSV
hsv(93, 86%, 64%)
LAB
lab(60.06% -46.13 57.85)
LCH
lch(60.06% 73.99 128.57)
CMYK
cmyk(48%, 0%, 86%, 36%)

Etymology

Forceful
adjective

Old French force, strength — adjectival suffix -ful. As a color modifier, forceful implies a saturated-and-vigorous quality where the hue exerts visual force on its substrate. Sits at the bold-and-saturated end of the grid, parallel to mighty and commanding in tone.

Grün
noun

The German word for green — used in Grünspan (verdigris) and Grün-Gelb of medieval German banners. The color refers to a Grün-painted Bavarian dirndl ribbon: a saturated, slightly cool green with the matte finish of dyed wool. The German cousin of green.

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.

#55a317
Original
#a99500
Protanopia
#9f8e2a
Deuteranopia
#529d8b
Tritanopia
#888888
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).
AA Largeon White
3.16:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
6.64:1

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