#81DA51#81DA51

#81DA51 is a light, vivid yellow-green. Relative luminance 0.554; OKLCH L 80.4% C 0.192 H 136.3°. Best body text is #000000 at 12.08:1 contrast (WCAG AA passes).

Color values

HEX	#81DA51
RGB	rgb(129, 218, 81)
HSL	hsl(99, 65%, 59%)
HSV	hsv(99, 63%, 85%)
CMYK	cmyk(40.8%, 0%, 62.8%, 14.5%)
CIE-LAB	lab(79.27, -50.21, 57.42)
CIE-LCH	lch(79.27, 76.27, 131.17°)
OKLab	oklab(80.44% -0.1391 0.1328)
OKLCH	oklch(80.44% 0.192 136.3)
XYZ	xyz(35.6089, 55.4021, 16.6004)
Luminance	0.5540 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81DA51 #AA51DA

analogous

#C5DA51 #81DA51 #51DA65

triadic

#81DA51 #5181DA #DA5181

tetradic

#81DA51 #51C5DA #AA51DA #DA6551

square

#81DA51 #51C5DA #AA51DA #DA6551

split-complementary

#81DA51 #6551DA #DA51C5

monochromatic

#47921F #60C42A #81DA51 #A6E583 #CAEFB6

Accessibility & contrast

On white

1.74

#81DA51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.08

#81DA51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81DA51

12.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81DA51	#FFFFFF	#000000	##000000
##81DA51	1.00	1.74	12.08	12.08
#FFFFFF	1.74	1.00	21.00	21.00
#000000	12.08	21.00	1.00	1.00
##000000	12.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1C940

Deuteranopia (green-blind)

#D5C25C

Tritanopia (blue-blind)

#7ED2BD

Achromatopsia (no color)

#C4C4C4

Design tokens & code

CSS

--color: #81da51;
/* rgb */ color: rgb(129, 218, 81);
/* oklch */ color: oklch(80.4% 0.192 136.3);

Tailwind

colors: {
  custom: {
    50: '#abe687',
    500: '#81da51',
    950: '#000000',
  },
}

SCSS

$custom: #81da51;
$custom-light: #abe687;
$custom-dark: #000000;

JSON

{
  "hex": "#81da51",
  "rgb": {
    "r": 129,
    "g": 218,
    "b": 81
  },
  "hsl": {
    "h": 98.978,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.80438,
    "c": 0.19231,
    "h": 136.3
  },
  "luminance": 0.55404
}

Semantic roles & 50–950 ramp

primary

#81DA51

secondary

#763997

accent

#40E8AD

background

#FDFEFC

surface

#F7FCF4

border

#D0D5CE

text

#11160C

muted

#81847F

Preview Lab

Preview with #81DA51

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

Preview Lab → · Contrast checker → · Palette generator →