#51BB40#51BB40

#51BB40 is a light, vivid green. Relative luminance 0.377; OKLCH L 70.4% C 0.189 H 141.0°. Best body text is #000000 at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#51BB40
RGB	rgb(81, 187, 64)
HSL	hsl(112, 49%, 49%)
HSV	hsv(112, 66%, 73%)
CMYK	cmyk(56.7%, 0%, 65.8%, 26.7%)
CIE-LAB	lab(67.77, -53.66, 51.41)
CIE-LCH	lch(67.77, 74.32, 136.23°)
OKLab	oklab(70.43% -0.1467 0.1186)
OKLCH	oklch(70.43% 0.189 141)
XYZ	xyz(22.0880, 37.6582, 10.9543)
Luminance	0.3766 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB40 #AA40BB

analogous

#8FBB40 #51BB40 #40BB6D

triadic

#51BB40 #4051BB #BB4051

tetradic

#51BB40 #408FBB #AA40BB #BB6D40

square

#51BB40 #408FBB #AA40BB #BB6D40

split-complementary

#51BB40 #6D40BB #BB408F

monochromatic

#2A6021 #3D8D30 #51BB40 #79CD6C #A2DC99

Accessibility & contrast

On white

2.46

#51BB40 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.53

#51BB40 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB40

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB40	#FFFFFF	#000000	##000000
##51BB40	1.00	2.46	8.53	8.53
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.53	21.00	1.00	1.00
##000000	8.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0AB30

Deuteranopia (green-blind)

#B2A24B

Tritanopia (blue-blind)

#43B5A2

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51bb40;
/* rgb */ color: rgb(81, 187, 64);
/* oklch */ color: oklch(70.4% 0.189 141.0);

Tailwind

colors: {
  custom: {
    50: '#8cd07a',
    500: '#51bb40',
    950: '#000000',
  },
}

SCSS

$custom: #51bb40;
$custom-light: #8cd07a;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb40",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 64
  },
  "hsl": {
    "h": 111.707,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.70426,
    "c": 0.18869,
    "h": 141
  },
  "luminance": 0.3766
}

Semantic roles & 50–950 ramp

primary

#51BB40

secondary

#C08FC8

accent

#4FD9C6

background

#F9FCF7

surface

#F1F9EE

border

#CBD2C9

text

#0D140A

muted

#7E827C

Preview Lab

Preview with #51BB40

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

Preview Lab → · Contrast checker → · Palette generator →