#51EF63#51EF63

#51EF63 is a very light, highly saturated green. Relative luminance 0.644; OKLCH L 84.1% C 0.225 H 145.0°. Best body text is #000000 at 13.88:1 contrast (WCAG AA passes).

Color values

HEX	#51EF63
RGB	rgb(81, 239, 99)
HSL	hsl(127, 83%, 63%)
HSV	hsv(127, 66%, 94%)
CMYK	cmyk(66.1%, 0%, 58.6%, 6.3%)
CIE-LAB	lab(84.16, -68.27, 54.80)
CIE-LCH	lch(84.16, 87.54, 141.25°)
OKLab	oklab(84.07% -0.1846 0.1292)
OKLCH	oklch(84.07% 0.225 145)
XYZ	xyz(36.5096, 64.3793, 22.3043)
Luminance	0.6438 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51EF63 #EF51DD

analogous

#8EEF51 #51EF63 #51EFB2

triadic

#51EF63 #6351EF #EF6351

tetradic

#51EF63 #518EEF #EF51DD #EFB251

square

#51EF63 #518EEF #EF51DD #EFB251

split-complementary

#51EF63 #B251EF #EF518E

monochromatic

#11B523 #19EA31 #51EF63 #89F495 #C1F9C7

Accessibility & contrast

On white

1.51

#51EF63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.88

#51EF63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51EF63

13.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51EF63	#FFFFFF	#000000	##000000
##51EF63	1.00	1.51	13.88	13.88
#FFFFFF	1.51	1.00	21.00	21.00
#000000	13.88	21.00	1.00	1.00
##000000	13.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F3DA54

Deuteranopia (green-blind)

#E0CD6E

Tritanopia (blue-blind)

#20E9D1

Achromatopsia (no color)

#D2D2D2

Design tokens & code

CSS

--color: #51ef63;
/* rgb */ color: rgb(81, 239, 99);
/* oklch */ color: oklch(84.1% 0.225 145.0);

Tailwind

colors: {
  custom: {
    50: '#94f593',
    500: '#51ef63',
    950: '#000000',
  },
}

SCSS

$custom: #51ef63;
$custom-light: #94f593;
$custom-dark: #000000;

JSON

{
  "hex": "#51ef63",
  "rgb": {
    "r": 81,
    "g": 239,
    "b": 99
  },
  "hsl": {
    "h": 126.835,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.84072,
    "c": 0.22535,
    "h": 145
  },
  "luminance": 0.64383
}

Semantic roles & 50–950 ramp

primary

#51EF63

secondary

#B530A5

accent

#06C7E0

background

#FCFFFC

surface

#F5FFF4

border

#CFD7CE

text

#0F170D

muted

#80857F

Preview Lab

Preview with #51EF63

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

Preview Lab → · Contrast checker → · Palette generator →