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Grounded Spring

#216304
Notes

Grounded Spring (#216304) is a deep green 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 (102°, 92%, 20%) places it in the highly saturated band at a dark 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#216304
RGB
rgb(33, 99, 4)
HSL
hsl(102, 92%, 20%)
HWB
hwb(102 2% 61%)
OKLCH
oklch(44.0% 0.137 139.2)
HSV
hsv(102, 96%, 39%)
LAB
lab(36.47% -37.45 41.16)
LCH
lch(36.47% 55.64 132.30)
CMYK
cmyk(67%, 0%, 96%, 61%)

Etymology

Grounded
adjective

Old English grund, bottom / foundation — past-participle of ground. As a color modifier, grounded implies a saturated-and-foundational quality where the hue anchors the surrounding palette through its weighty presence. Sits at the bold-and-balanced end of the grid, parallel to centered and anchored.

Spring
noun

The season — and the color of the new chlorophyll that appears with it. Spring green refers to the saturated, slightly yellow-shifted green of a temperate-zone canopy in early May: a clean, optically bright green with the translucent quality of new leaf tissue against the sun. Cooler than chartreuse, lighter than fern, with the seasonal optimism of a color that lasts only the few weeks before summer settles in.

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.

#216304
Original
#665900
Protanopia
#5e5413
Deuteranopia
#185f53
Tritanopia
#4e4e4e
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).
AAAon White
7.37:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.85:1

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