#51CB39#51CB39

#51CB39 is a light, highly saturated green. Relative luminance 0.448; OKLCH L 74.5% C 0.212 H 140.7°. Best body text is #000000 at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#51CB39
RGB	rgb(81, 203, 57)
HSL	hsl(110, 58%, 51%)
HSV	hsv(110, 72%, 80%)
CMYK	cmyk(60.1%, 0%, 71.9%, 20.4%)
CIE-LAB	lab(72.73, -60.03, 59.37)
CIE-LCH	lch(72.73, 84.43, 135.32°)
OKLab	oklab(74.51% -0.1643 0.1345)
OKLCH	oklch(74.51% 0.212 140.7)
XYZ	xyz(25.4866, 44.7543, 11.1654)
Luminance	0.4476 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CB39 #B339CB

analogous

#9ACB39 #51CB39 #39CB6A

triadic

#51CB39 #3951CB #CB3951

tetradic

#51CB39 #399ACB #B339CB #CB6A39

square

#51CB39 #399ACB #B339CB #CB6A39

split-complementary

#51CB39 #6A39CB #CB399A

monochromatic

#2A6D1D #3C9D29 #51CB39 #7CD869 #A6E49A

Accessibility & contrast

On white

2.11

#51CB39 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.95

#51CB39 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CB39

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CB39	#FFFFFF	#000000	##000000
##51CB39	1.00	2.11	9.95	9.95
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.95	21.00	1.00	1.00
##000000	9.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B91F

Deuteranopia (green-blind)

#C1AF48

Tritanopia (blue-blind)

#3FC5AE

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51cb39;
/* rgb */ color: rgb(81, 203, 57);
/* oklch */ color: oklch(74.5% 0.212 140.7);

Tailwind

colors: {
  custom: {
    50: '#8fdc78',
    500: '#51cb39',
    950: '#000000',
  },
}

SCSS

$custom: #51cb39;
$custom-light: #8fdc78;
$custom-dark: #000000;

JSON

{
  "hex": "#51cb39",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 57
  },
  "hsl": {
    "h": 110.137,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.74506,
    "c": 0.21236,
    "h": 140.7
  },
  "luminance": 0.44757
}

Semantic roles & 50–950 ramp

primary

#51CB39

secondary

#C690D0

accent

#46E2C8

background

#F9FDF7

surface

#F2FBEE

border

#CCD4C9

text

#0E1509

muted

#7E837B

Preview Lab

Preview with #51CB39

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

Preview Lab → · Contrast checker → · Palette generator →