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Luminous Erba

#72b000
Notes

Luminous Erba (#72B000) 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 (81°, 100%, 35%) 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
#72b000
RGB
rgb(114, 176, 0)
HSL
hsl(81, 100%, 35%)
HWB
hwb(81 0% 31%)
OKLCH
oklch(68.8% 0.186 130.3)
HSV
hsv(81, 100%, 69%)
LAB
lab(65.46% -41.97 66.51)
LCH
lch(65.46% 78.65 122.25)
CMYK
cmyk(35%, 0%, 100%, 31%)

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.

Erba
noun

The Italian word for grass or herbs — used in erba luigia (lemon verbena) and erba cipollina (chives). Erba color refers to fresh-cut Tuscan lawn grass in May: a saturated, slightly cool yellow-green with the matte finish of fresh grass blades. The Italian cousin of meadow.

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

Click any swatch to explore

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.

#72b000
Original
#b9a200
Protanopia
#b09d23
Deuteranopia
#75a895
Tritanopia
#969696
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
2.65:1
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
7.93:1

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