#51E481#51E481

#51E481 is a light, vivid green. Relative luminance 0.588; OKLCH L 81.7% C 0.186 H 150.7°. Best body text is #000000 at 12.76:1 contrast (WCAG AA passes).

Color values

HEX	#51E481
RGB	rgb(81, 228, 129)
HSL	hsl(140, 73%, 61%)
HSV	hsv(140, 64%, 89%)
CMYK	cmyk(64.5%, 0%, 43.4%, 10.6%)
CIE-LAB	lab(81.19, -60.22, 37.04)
CIE-LCH	lch(81.19, 70.70, 148.40°)
OKLab	oklab(81.74% -0.1625 0.0912)
OKLCH	oklch(81.74% 0.186 150.7)
XYZ	xyz(35.0964, 58.8175, 30.2679)
Luminance	0.5882 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E481 #E451B4

analogous

#6AE451 #51E481 #51E4CA

triadic

#51E481 #8151E4 #E48151

tetradic

#51E481 #516AE4 #E451B4 #E4CA51

square

#51E481 #516AE4 #E451B4 #E4CA51

split-complementary

#51E481 #CA51E4 #E4516A

monochromatic

#19A246 #21D75C #51E481 #86ECA7 #BBF4CE

Accessibility & contrast

On white

1.65

#51E481 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.76

#51E481 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E481

12.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E481	#FFFFFF	#000000	##000000
##51E481	1.00	1.65	12.76	12.76
#FFFFFF	1.65	1.00	21.00	21.00
#000000	12.76	21.00	1.00	1.00
##000000	12.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E5D27A

Deuteranopia (green-blind)

#D2C588

Tritanopia (blue-blind)

#0EE0CC

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #51e481;
/* rgb */ color: rgb(81, 228, 129);
/* oklch */ color: oklch(81.7% 0.186 150.7);

Tailwind

colors: {
  custom: {
    50: '#91eea7',
    500: '#51e481',
    950: '#000000',
  },
}

SCSS

$custom: #51e481;
$custom-light: #91eea7;
$custom-dark: #000000;

JSON

{
  "hex": "#51e481",
  "rgb": {
    "r": 81,
    "g": 228,
    "b": 129
  },
  "hsl": {
    "h": 139.592,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.81738,
    "c": 0.18634,
    "h": 150.7
  },
  "luminance": 0.58821
}

Semantic roles & 50–950 ramp

primary

#51E481

secondary

#A43580

accent

#1095D5

background

#FCFFFC

surface

#F5FEF6

border

#CFD6D0

text

#0E160F

muted

#7F8580

Preview Lab

Preview with #51E481

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

Preview Lab → · Contrast checker → · Palette generator →