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Brimming Bloodstone

#428c0a
Notes

Brimming Bloodstone (#428C0A) is a deep 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 (94°, 87%, 29%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#428c0a
RGB
rgb(66, 140, 10)
HSL
hsl(94, 87%, 29%)
HWB
hwb(94 4% 45%)
OKLCH
oklch(57.0% 0.167 136.5)
P3
color(display-p3 0.3343 0.5423 0.1628)
HSV
hsv(94, 93%, 55%)
LAB
lab(51.76% -43.51 53.12)
LCH
lch(51.76% 68.67 129.32)
CMYK
cmyk(53%, 0%, 93%, 45%)

Etymology

Brimming
adjective

Old English brymme, brim / edge — present-participle of brim. As a color modifier, brimming implies a saturated-and-overflowing quality where the hue spills past the edge of its visual container with rich pigmentation. Sits at the bold-and-saturated end of the grid, parallel to replete and abundant.

Bloodstone
noun

A dark green chalcedony with red iron-oxide flecks — used in classical antiquity for engraved seals and Christian-era ornament (the red flecks symbolizing Christ's blood). Also called heliotrope. The color refers to a polished bloodstone cabochon: a saturated, slightly muted dark yellow-green with the optical complexity of red-flecked chalcedony.

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.

#428c0a
Original
#917f00
Protanopia
#88791f
Deuteranopia
#3e8676
Tritanopia
#737373
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
4.21:1
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
4.99:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##428C0A
Display P3
Display P3
color(display-p3 0.3343 0.5423 0.1628)
P3 has subtle headroomOKLCH chroma 0.167

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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