#81EF5B#81EF5B

#81EF5B is a very light, highly saturated green. Relative luminance 0.672; OKLCH L 85.6% C 0.211 H 138.6°. Best body text is #000000 at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#81EF5B
RGB	rgb(129, 239, 91)
HSL	hsl(105, 82%, 65%)
HSV	hsv(105, 62%, 94%)
CMYK	cmyk(46%, 0%, 61.9%, 6.3%)
CIE-LAB	lab(85.58, -57.60, 60.22)
CIE-LCH	lch(85.58, 83.33, 133.72°)
OKLab	oklab(85.63% -0.1585 0.1398)
OKLCH	oklch(85.63% 0.211 138.6)
XYZ	xyz(41.8066, 67.1527, 20.6543)
Luminance	0.6715 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Spring Green (survey)

#A9F971

ΔE00 4.41

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81EF5B #C95BEF

analogous

#CBEF5B #81EF5B #5BEF7F

triadic

#81EF5B #5B81EF #EF5B81

tetradic

#81EF5B #5BCBEF #C95BEF #EF7F5B

square

#81EF5B #5BCBEF #C95BEF #EF7F5B

split-complementary

#81EF5B #7F5BEF #EF5BCB

monochromatic

#3EBD12 #56EA23 #81EF5B #ACF493 #D7FACB

Accessibility & contrast

On white

1.46

#81EF5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.43

#81EF5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81EF5B

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81EF5B	#FFFFFF	#000000	##000000
##81EF5B	1.00	1.46	14.43	14.43
#FFFFFF	1.46	1.00	21.00	21.00
#000000	14.43	21.00	1.00	1.00
##000000	14.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F6DC4A

Deuteranopia (green-blind)

#E7D267

Tritanopia (blue-blind)

#79E7D0

Achromatopsia (no color)

#D6D6D6

Design tokens & code

CSS

--color: #81ef5b;
/* rgb */ color: rgb(129, 239, 91);
/* oklch */ color: oklch(85.6% 0.211 138.6);

Tailwind

colors: {
  custom: {
    50: '#adf58f',
    500: '#81ef5b',
    950: '#000000',
  },
}

SCSS

$custom: #81ef5b;
$custom-light: #adf58f;
$custom-dark: #000000;

JSON

{
  "hex": "#81ef5b",
  "rgb": {
    "r": 129,
    "g": 239,
    "b": 91
  },
  "hsl": {
    "h": 104.595,
    "s": 82.222,
    "l": 64.706
  },
  "oklch": {
    "l": 0.85634,
    "c": 0.21138,
    "h": 138.6
  },
  "luminance": 0.67155
}

Semantic roles & 50–950 ramp

primary

#81EF5B

secondary

#9833BC

accent

#07DFA7

background

#FDFFFC

surface

#F8FEF4

border

#D1D6CE

text

#11170D

muted

#81857F

Preview Lab

Preview with #81EF5B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →