#81D543#81D543

#81D543 is a light, vivid yellow-green. Relative luminance 0.527; OKLCH L 79.1% C 0.196 H 134.7°. Best body text is #000000 at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#81D543
RGB	rgb(129, 213, 67)
HSL	hsl(95, 63%, 55%)
HSV	hsv(95, 69%, 84%)
CMYK	cmyk(39.4%, 0%, 68.5%, 16.5%)
CIE-LAB	lab(77.67, -49.32, 61.31)
CIE-LCH	lch(77.67, 78.69, 128.81°)
OKLab	oklab(79.1% -0.1377 0.1393)
OKLCH	oklch(79.1% 0.196 134.7)
XYZ	xyz(33.8599, 52.6592, 13.6892)
Luminance	0.5266 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81D543 #9743D5

analogous

#CAD543 #81D543 #43D54E

triadic

#81D543 #4381D5 #D54381

tetradic

#81D543 #43CAD5 #9743D5 #D54E43

square

#81D543 #43CAD5 #9743D5 #D54E43

split-complementary

#81D543 #4E43D5 #D543CA

monochromatic

#47811D #63B328 #81D543 #A3E075 #C4EBA7

Accessibility & contrast

On white

1.82

#81D543 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.53

#81D543 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81D543

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81D543	#FFFFFF	#000000	##000000
##81D543	1.00	1.82	11.53	11.53
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.53	21.00	1.00	1.00
##000000	11.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DDC42D

Deuteranopia (green-blind)

#D1BD50

Tritanopia (blue-blind)

#80CDB8

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #81d543;
/* rgb */ color: rgb(129, 213, 67);
/* oklch */ color: oklch(79.1% 0.196 134.7);

Tailwind

colors: {
  custom: {
    50: '#abe27f',
    500: '#81d543',
    950: '#000000',
  },
}

SCSS

$custom: #81d543;
$custom-light: #abe27f;
$custom-dark: #000000;

JSON

{
  "hex": "#81d543",
  "rgb": {
    "r": 129,
    "g": 213,
    "b": 67
  },
  "hsl": {
    "h": 94.521,
    "s": 63.478,
    "l": 54.902
  },
  "oklch": {
    "l": 0.79095,
    "c": 0.19586,
    "h": 134.7
  },
  "luminance": 0.52661
}

Semantic roles & 50–950 ramp

primary

#81D543

secondary

#643488

accent

#41E7A0

background

#FDFEFB

surface

#F8FCF2

border

#D1D5CC

text

#11150B

muted

#81847E

Preview Lab

Preview with #81D543

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

Preview Lab → · Contrast checker → · Palette generator →