#51B140#51B140

#51B140 is a light, vivid green. Relative luminance 0.336; OKLCH L 67.8% C 0.176 H 140.8°. Best body text is #000000 at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#51B140
RGB	rgb(81, 177, 64)
HSL	hsl(111, 47%, 47%)
HSV	hsv(111, 64%, 69%)
CMYK	cmyk(54.2%, 0%, 63.8%, 30.6%)
CIE-LAB	lab(64.61, -49.88, 47.94)
CIE-LCH	lch(64.61, 69.18, 136.13°)
OKLab	oklab(67.83% -0.1365 0.1113)
OKLCH	oklch(67.83% 0.176 140.8)
XYZ	xyz(20.0400, 33.5621, 10.2716)
Luminance	0.3356 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B140 #A040B1

analogous

#8AB140 #51B140 #40B167

triadic

#51B140 #4051B1 #B14051

tetradic

#51B140 #408AB1 #A040B1 #B16740

square

#51B140 #408AB1 #A040B1 #B16740

split-complementary

#51B140 #6740B1 #B1408A

monochromatic

#28571F #3C8430 #51B140 #75C866 #9ED893

Accessibility & contrast

On white

2.72

#51B140 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.71

#51B140 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B140

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B140	#FFFFFF	#000000	##000000
##51B140	1.00	2.72	7.71	7.71
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.71	21.00	1.00	1.00
##000000	7.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5A232

Deuteranopia (green-blind)

#A99A4A

Tritanopia (blue-blind)

#46AC99

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51b140;
/* rgb */ color: rgb(81, 177, 64);
/* oklch */ color: oklch(67.8% 0.176 140.8);

Tailwind

colors: {
  custom: {
    50: '#8bc979',
    500: '#51b140',
    950: '#000000',
  },
}

SCSS

$custom: #51b140;
$custom-light: #8bc979;
$custom-dark: #000000;

JSON

{
  "hex": "#51b140",
  "rgb": {
    "r": 81,
    "g": 177,
    "b": 64
  },
  "hsl": {
    "h": 110.973,
    "s": 46.888,
    "l": 47.255
  },
  "oklch": {
    "l": 0.67827,
    "c": 0.1761,
    "h": 140.8
  },
  "luminance": 0.33564
}

Semantic roles & 50–950 ramp

primary

#51B140

secondary

#BB89C3

accent

#51D7C2

background

#F9FCF7

surface

#F1F8EE

border

#CBD1C9

text

#0D1309

muted

#7E827B

Preview Lab

Preview with #51B140

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

Preview Lab → · Contrast checker → · Palette generator →