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Bright Tahiti

#78e68c
Notes

Bright Tahiti (#78E68C) 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 (131°, 69%, 69%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#78e68c
RGB
rgb(120, 230, 140)
HSL
hsl(131, 69%, 69%)
HWB
hwb(131 47% 10%)
OKLCH
oklch(83.8% 0.161 148.1)
P3
color(display-p3 0.5793 0.8918 0.5832)
HSV
hsv(131, 48%, 90%)
LAB
lab(83.17% -50.35 34.34)
LCH
lch(83.17% 60.95 145.70)
CMYK
cmyk(48%, 0%, 39%, 10%)

Etymology

Bright
adjective

Old English beorht, shining, luminous — cognate with the German Bracht, splendor. Applied to color since at least the medieval period for hues that read as luminous: not just light in value but optically active, as if scattering more light back than a dimmer color of the same lightness would. Sits at the bright-bucket center alongside vivid and brilliant.

Tahiti
noun

The largest island of French Polynesia — and the saturated blue-green of Tahitian lagoons surrounded by coral reef. Tahiti color refers to a Tahitian lagoon at midday: a saturated, slightly cool deep blue-green with the optical clarity of shallow tropical water over white coral sand.

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.

#78e68c
Original
#e8d686
Protanopia
#d8cb92
Deuteranopia
#64e2d0
Tritanopia
#c8c8c8
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
1.56:1
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
13.50:1

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
##78E68C
Display P3
Display P3
color(display-p3 0.5793 0.8918 0.5832)
P3 has subtle headroomOKLCH chroma 0.161

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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