#51BB33#51BB33

#51BB33 is a light, vivid green. Relative luminance 0.375; OKLCH L 70.3% C 0.197 H 139.7°. Best body text is #000000 at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#51BB33
RGB	rgb(81, 187, 51)
HSL	hsl(107, 57%, 47%)
HSV	hsv(107, 73%, 73%)
CMYK	cmyk(56.7%, 0%, 72.7%, 26.7%)
CIE-LAB	lab(67.67, -54.77, 56.41)
CIE-LCH	lch(67.67, 78.63, 134.16°)
OKLab	oklab(70.31% -0.1505 0.1275)
OKLCH	oklch(70.31% 0.197 139.7)
XYZ	xyz(21.7603, 37.5271, 9.2281)
Luminance	0.3753 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB33 #9D33BB

analogous

#95BB33 #51BB33 #33BB59

triadic

#51BB33 #3351BB #BB3351

tetradic

#51BB33 #3395BB #9D33BB #BB5933

square

#51BB33 #3395BB #9D33BB #BB5933

split-complementary

#51BB33 #5933BB #BB3395

monochromatic

#275B19 #3C8B26 #51BB33 #74D259 #9CDF89

Accessibility & contrast

On white

2.47

#51BB33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.51

#51BB33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB33

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB33	#FFFFFF	#000000	##000000
##51BB33	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)

#C0AA1A

Deuteranopia (green-blind)

#B3A141

Tritanopia (blue-blind)

#45B5A1

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51bb33;
/* rgb */ color: rgb(81, 187, 51);
/* oklch */ color: oklch(70.3% 0.197 139.7);

Tailwind

colors: {
  custom: {
    50: '#8dd073',
    500: '#51bb33',
    950: '#000000',
  },
}

SCSS

$custom: #51bb33;
$custom-light: #8dd073;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb33",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 51
  },
  "hsl": {
    "h": 106.765,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.70314,
    "c": 0.19725,
    "h": 139.7
  },
  "luminance": 0.37529
}

Semantic roles & 50–950 ramp

primary

#51BB33

secondary

#B981C9

accent

#47E0BF

background

#F9FCF7

surface

#F1F9ED

border

#CBD2C8

text

#0D1409

muted

#7E827B

Preview Lab

Preview with #51BB33

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

Preview Lab → · Contrast checker → · Palette generator →