#51BB39#51BB39

#51BB39 is a light, vivid green. Relative luminance 0.376; OKLCH L 70.4% C 0.193 H 140.3°. Best body text is #000000 at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#51BB39
RGB	rgb(81, 187, 57)
HSL	hsl(109, 53%, 48%)
HSV	hsv(109, 70%, 73%)
CMYK	cmyk(56.7%, 0%, 69.5%, 26.7%)
CIE-LAB	lab(67.71, -54.30, 54.19)
CIE-LCH	lch(67.71, 76.71, 135.06°)
OKLab	oklab(70.36% -0.1488 0.1237)
OKLCH	oklch(70.36% 0.193 140.3)
XYZ	xyz(21.9012, 37.5835, 9.9703)
Luminance	0.3759 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB39 #A339BB

analogous

#92BB39 #51BB39 #39BB62

triadic

#51BB39 #3951BB #BB3951

tetradic

#51BB39 #3992BB #A339BB #BB6239

square

#51BB39 #3992BB #A339BB #BB6239

split-complementary

#51BB39 #6239BB #BB3992

monochromatic

#285D1C #3D8C2B #51BB39 #76CF62 #9FDD91

Accessibility & contrast

On white

2.47

#51BB39 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.52

#51BB39 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB39

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB39	#FFFFFF	#000000	##000000
##51BB39	1.00	2.47	8.52	8.52
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.52	21.00	1.00	1.00
##000000	8.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0AA25

Deuteranopia (green-blind)

#B3A245

Tritanopia (blue-blind)

#44B5A1

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51bb39;
/* rgb */ color: rgb(81, 187, 57);
/* oklch */ color: oklch(70.4% 0.193 140.3);

Tailwind

colors: {
  custom: {
    50: '#8dd076',
    500: '#51bb39',
    950: '#000000',
  },
}

SCSS

$custom: #51bb39;
$custom-light: #8dd076;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb39",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 57
  },
  "hsl": {
    "h": 108.923,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.70362,
    "c": 0.19349,
    "h": 140.3
  },
  "luminance": 0.37585
}

Semantic roles & 50–950 ramp

primary

#51BB39

secondary

#BC87C8

accent

#4BDDC2

background

#F9FCF7

surface

#F1F9ED

border

#CBD2C8

text

#0D1409

muted

#7E827B

Preview Lab

Preview with #51BB39

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

Preview Lab → · Contrast checker → · Palette generator →