#81D540#81D540

#81D540 is a light, vivid yellow-green. Relative luminance 0.526; OKLCH L 79.1% C 0.198 H 134.4°. Best body text is #000000 at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#81D540
RGB	rgb(129, 213, 64)
HSL	hsl(94, 64%, 54%)
HSV	hsv(94, 70%, 84%)
CMYK	cmyk(39.4%, 0%, 70%, 16.5%)
CIE-LAB	lab(77.65, -49.53, 62.42)
CIE-LCH	lch(77.65, 79.68, 128.44°)
OKLab	oklab(79.07% -0.1385 0.1412)
OKLCH	oklch(79.07% 0.198 134.4)
XYZ	xyz(33.7723, 52.6241, 13.2275)
Luminance	0.5263 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#81D540 #9440D5

analogous

#CBD540 #81D540 #40D54A

triadic

#81D540 #4081D5 #D54081

tetradic

#81D540 #40CBD5 #9440D5 #D54A40

square

#81D540 #40CBD5 #9440D5 #D54A40

split-complementary

#81D540 #4A40D5 #D540CB

monochromatic

#477F1C #63B127 #81D540 #A2E072 #C3EBA4

Accessibility & contrast

On white

1.82

#81D540 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.53

#81D540 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #81D540

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##81D540	#FFFFFF	#000000	##000000
##81D540	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)

#DDC428

Deuteranopia (green-blind)

#D2BD4E

Tritanopia (blue-blind)

#80CDB8

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #81d540;
/* rgb */ color: rgb(129, 213, 64);
/* oklch */ color: oklch(79.1% 0.198 134.4);

Tailwind

colors: {
  custom: {
    50: '#ace27d',
    500: '#81d540',
    950: '#000000',
  },
}

SCSS

$custom: #81d540;
$custom-light: #ace27d;
$custom-dark: #000000;

JSON

{
  "hex": "#81d540",
  "rgb": {
    "r": 129,
    "g": 213,
    "b": 64
  },
  "hsl": {
    "h": 93.826,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.79071,
    "c": 0.1978,
    "h": 134.4
  },
  "luminance": 0.52626
}

Semantic roles & 50–950 ramp

primary

#81D540

secondary

#623386

accent

#41E79E

background

#FDFEFB

surface

#F8FCF2

border

#D1D5CC

text

#11150A

muted

#81847D

Preview Lab

Preview with #81D540

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

Preview Lab → · Contrast checker → · Palette generator →