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Neon Foresta

#51aa2d
Notes

Neon Foresta (#51AA2D) is a true green with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (103°, 58%, 42%) 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
#51aa2d
RGB
rgb(81, 170, 45)
HSL
hsl(103, 58%, 42%)
HWB
hwb(103 18% 33%)
OKLCH
oklch(65.8% 0.180 138.4)
P3
color(display-p3 0.4087 0.6587 0.2586)
HSV
hsv(103, 74%, 67%)
LAB
lab(62.24% -48.84 53.12)
LCH
lch(62.24% 72.16 132.60)
CMYK
cmyk(52%, 0%, 74%, 33%)

Etymology

Neon
adjective

Greek néon, new — element-name (atomic-number 10), discovered by William Ramsay in 1898. As a color modifier, neon implies a saturated-and-electric-glow quality, the bright color of Las-Vegas-and-Times-Square neon-marquee gas-discharge-tube emission. Sits at the bright-and-electric end of the grid, parallel to electric and fluorescent in usage.

Foresta
noun

The Italian word for forest — used in the Foreste Casentinesi national park of Tuscany and the saturated deep green of Italian Alpine forests. The color refers to a Foreste canopy seen from above: a saturated, slightly cool deep green with the matte finish of mixed conifer-and-broadleaf foliage.

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.

#51aa2d
Original
#af9b16
Protanopia
#a4943a
Deuteranopia
#4aa492
Tritanopia
#8e8e8e
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
2.94:1
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
7.14:1

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
##51AA2D
Display P3
Display P3
color(display-p3 0.4087 0.6587 0.2586)
P3 has visible headroomOKLCH chroma 0.180

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

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