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Mighty Uvarovite

#428d2d
Notes

Mighty Uvarovite (#428D2D) 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 (107°, 52%, 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#428d2d
RGB
rgb(66, 141, 45)
HSL
hsl(107, 52%, 36%)
HWB
hwb(107 18% 45%)
OKLCH
oklch(57.5% 0.151 139.5)
HSV
hsv(107, 68%, 55%)
LAB
lab(52.28% -41.79 42.59)
LCH
lch(52.28% 59.67 134.46)
CMYK
cmyk(53%, 0%, 68%, 45%)

Etymology

Mighty
adjective

Old English mihtig, strong — adjectival suffix -y, sharing root with German mächtig. As a color modifier, mighty implies a saturated-and-strong-presence quality, where the hue commands visual attention through pure pigmentation strength. Sits at the bold-and-saturated end of the grid, parallel to forceful and commanding in tone.

Uvarovite
noun

A chromium-rich green garnet — mined principally in the Russian Urals, Finland, and Quebec. Named for Russian Count Sergei Semenovich Uvarov. The color refers to drusy uvarovite crystals on chromite matrix: a saturated, slightly cool deep emerald-green with the gem's signature internal fire.

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.

#428d2d
Original
#918120
Protanopia
#877a35
Deuteranopia
#3b8879
Tritanopia
#767676
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
4.13:1
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
5.08:1

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