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Fluorescent Pine

#57b63d
Notes

Fluorescent Pine (#57B63D) 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°, 50%, 48%) 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
#57b63d
RGB
rgb(87, 182, 61)
HSL
hsl(107, 50%, 48%)
HWB
hwb(107 24% 29%)
OKLCH
oklch(69.3% 0.182 139.6)
HSV
hsv(107, 66%, 71%)
LAB
lab(66.38% -50.44 51.22)
LCH
lch(66.38% 71.88 134.56)
CMYK
cmyk(52%, 0%, 66%, 29%)

Etymology

Fluorescent
adjective

Latin fluēre, to flow — adjectival suffix -escent. As a color modifier, fluorescent implies a saturated-and-UV-stimulated-glow quality, the bright color of fluorite-and-ZnS mineral-pigment fluorescent-lamp emission. Sits at the bright-and-cool end of the grid, parallel to phosphorescent and neon in usage.

Pine
noun

The genus Pinus, conifers spread across nearly every continent — white, ponderosa, Scots, sugar — distinguished from spruce by needle clusters bound at the base. The color refers to mature pine needles in late summer: a saturated, slightly muted green with the resinous warmth of pine oil. Deeper than spruce, warmer than fir, with the unmistakable association of a forest where the ground is bare but the canopy never empties.

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.

#57b63d
Original
#bba62d
Protanopia
#af9e48
Deuteranopia
#4eb09d
Tritanopia
#999999
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
2.57:1
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
8.16:1

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