#51BB37#51BB37

#51BB37 is a light, vivid green. Relative luminance 0.376; OKLCH L 70.3% C 0.195 H 140.1°. Best body text is #000000 at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#51BB37
RGB	rgb(81, 187, 55)
HSL	hsl(108, 55%, 47%)
HSV	hsv(108, 71%, 73%)
CMYK	cmyk(56.7%, 0%, 70.6%, 26.7%)
CIE-LAB	lab(67.70, -54.46, 54.94)
CIE-LCH	lch(67.70, 77.36, 134.75°)
OKLab	oklab(70.35% -0.1494 0.125)
OKLCH	oklch(70.35% 0.195 140.1)
XYZ	xyz(21.8523, 37.5639, 9.7127)
Luminance	0.3757 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB37 #A137BB

analogous

#93BB37 #51BB37 #37BB5F

triadic

#51BB37 #3751BB #BB3751

tetradic

#51BB37 #3793BB #A137BB #BB5F37

square

#51BB37 #3793BB #A137BB #BB5F37

split-complementary

#51BB37 #5F37BB #BB3793

monochromatic

#285C1B #3D8C29 #51BB37 #75D05F #9EDE8E

Accessibility & contrast

On white

2.47

#51BB37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.51

#51BB37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB37

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB37	#FFFFFF	#000000	##000000
##51BB37	1.00	2.47	8.51	8.51
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.51	21.00	1.00	1.00
##000000	8.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0AA22

Deuteranopia (green-blind)

#B3A244

Tritanopia (blue-blind)

#44B5A1

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51bb37;
/* rgb */ color: rgb(81, 187, 55);
/* oklch */ color: oklch(70.3% 0.195 140.1);

Tailwind

colors: {
  custom: {
    50: '#8dd075',
    500: '#51bb37',
    950: '#000000',
  },
}

SCSS

$custom: #51bb37;
$custom-light: #8dd075;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb37",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 55
  },
  "hsl": {
    "h": 108.182,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.70346,
    "c": 0.19479,
    "h": 140.1
  },
  "luminance": 0.37566
}

Semantic roles & 50–950 ramp

primary

#51BB37

secondary

#BB85C9

accent

#4ADEC1

background

#F9FCF7

surface

#F1F9ED

border

#CBD2C8

text

#0D1409

muted

#7E827B

Preview Lab

Preview with #51BB37

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

Preview Lab → · Contrast checker → · Palette generator →