#51EF57#51EF57

#51EF57 is a very light, highly saturated green. Relative luminance 0.642; OKLCH L 83.9% C 0.234 H 143.7°. Best body text is #000000 at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#51EF57
RGB	rgb(81, 239, 87)
HSL	hsl(122, 83%, 63%)
HSV	hsv(122, 66%, 94%)
CMYK	cmyk(66.1%, 0%, 63.6%, 6.3%)
CIE-LAB	lab(84.05, -69.57, 59.76)
CIE-LCH	lch(84.05, 91.72, 139.34°)
OKLab	oklab(83.95% -0.1886 0.1388)
OKLCH	oklch(83.95% 0.234 143.7)
XYZ	xyz(35.9779, 64.1667, 19.5043)
Luminance	0.6417 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51EF57 #EF51E9

analogous

#9AEF51 #51EF57 #51EFA6

triadic

#51EF57 #5751EF #EF5751

tetradic

#51EF57 #519AEF #EF51E9 #EFA651

square

#51EF57 #519AEF #EF51E9 #EFA651

split-complementary

#51EF57 #A651EF #EF519A

monochromatic

#11B517 #19EA21 #51EF57 #89F48D #C1F9C3

Accessibility & contrast

On white

1.52

#51EF57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.83

#51EF57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51EF57

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51EF57	#FFFFFF	#000000	##000000
##51EF57	1.00	1.52	13.83	13.83
#FFFFFF	1.52	1.00	21.00	21.00
#000000	13.83	21.00	1.00	1.00
##000000	13.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F4DA44

Deuteranopia (green-blind)

#E1CD64

Tritanopia (blue-blind)

#27E9CF

Achromatopsia (no color)

#D2D2D2

Design tokens & code

CSS

--color: #51ef57;
/* rgb */ color: rgb(81, 239, 87);
/* oklch */ color: oklch(83.9% 0.234 143.7);

Tailwind

colors: {
  custom: {
    50: '#94f58c',
    500: '#51ef57',
    950: '#000000',
  },
}

SCSS

$custom: #51ef57;
$custom-light: #94f58c;
$custom-dark: #000000;

JSON

{
  "hex": "#51ef57",
  "rgb": {
    "r": 81,
    "g": 239,
    "b": 87
  },
  "hsl": {
    "h": 122.278,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.83945,
    "c": 0.23417,
    "h": 143.7
  },
  "luminance": 0.6417
}

Semantic roles & 50–950 ramp

primary

#51EF57

secondary

#B530AF

accent

#06D7E0

background

#FCFFFC

surface

#F5FFF4

border

#CFD7CE

text

#0F170C

muted

#80857F

Preview Lab

Preview with #51EF57

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

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