#51C440#51C440

#51C440 is a light, vivid green. Relative luminance 0.416; OKLCH L 72.8% C 0.200 H 141.2°. Best body text is #000000 at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#51C440
RGB	rgb(81, 196, 64)
HSL	hsl(112, 53%, 51%)
HSV	hsv(112, 67%, 77%)
CMYK	cmyk(58.7%, 0%, 67.3%, 23.1%)
CIE-LAB	lab(70.59, -56.96, 54.46)
CIE-LCH	lch(70.59, 78.80, 136.29°)
OKLab	oklab(72.76% -0.1556 0.1251)
OKLCH	oklch(72.76% 0.2 141.2)
XYZ	xyz(24.0575, 41.5972, 11.6108)
Luminance	0.4160 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C440 #B340C4

analogous

#93C440 #51C440 #40C471

triadic

#51C440 #4051C4 #C44051

tetradic

#51C440 #4093C4 #B340C4 #C47140

square

#51C440 #4093C4 #B340C4 #C47140

split-complementary

#51C440 #7140C4 #C44093

monochromatic

#2A6920 #3C982F #51C440 #7CD26F #A6E19E

Accessibility & contrast

On white

2.25

#51C440 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.32

#51C440 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C440

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C440	#FFFFFF	#000000	##000000
##51C440	1.00	2.25	9.32	9.32
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.32	21.00	1.00	1.00
##000000	9.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C9B32E

Deuteranopia (green-blind)

#BAA94C

Tritanopia (blue-blind)

#40BEA9

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #51c440;
/* rgb */ color: rgb(81, 196, 64);
/* oklch */ color: oklch(72.8% 0.200 141.2);

Tailwind

colors: {
  custom: {
    50: '#8ed77b',
    500: '#51c440',
    950: '#000000',
  },
}

SCSS

$custom: #51c440;
$custom-light: #8ed77b;
$custom-dark: #000000;

JSON

{
  "hex": "#51c440",
  "rgb": {
    "r": 81,
    "g": 196,
    "b": 64
  },
  "hsl": {
    "h": 112.273,
    "s": 52.8,
    "l": 50.98
  },
  "oklch": {
    "l": 0.72756,
    "c": 0.19967,
    "h": 141.2
  },
  "luminance": 0.41599
}

Semantic roles & 50–950 ramp

primary

#51C440

secondary

#C693CD

accent

#4CDCCA

background

#F9FDF7

surface

#F2FAEE

border

#CCD3C9

text

#0D140A

muted

#7E837C

Preview Lab

Preview with #51C440

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

Preview Lab → · Contrast checker → · Palette generator →