#51B040#51B040

#51B040 is a light, vivid green. Relative luminance 0.332; OKLCH L 67.6% C 0.175 H 140.8°. Best body text is #000000 at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#51B040
RGB	rgb(81, 176, 64)
HSL	hsl(111, 47%, 47%)
HSV	hsv(111, 64%, 69%)
CMYK	cmyk(54%, 0%, 63.6%, 31%)
CIE-LAB	lab(64.30, -49.49, 47.59)
CIE-LCH	lch(64.30, 68.66, 136.12°)
OKLab	oklab(67.57% -0.1354 0.1106)
OKLCH	oklch(67.57% 0.175 140.8)
XYZ	xyz(19.8432, 33.1686, 10.2060)
Luminance	0.3317 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B040 #9F40B0

analogous

#89B040 #51B040 #40B067

triadic

#51B040 #4051B0 #B04051

tetradic

#51B040 #4089B0 #9F40B0 #B06740

square

#51B040 #4089B0 #9F40B0 #B06740

split-complementary

#51B040 #6740B0 #B04089

monochromatic

#28561F #3C8330 #51B040 #75C766 #9DD893

Accessibility & contrast

On white

2.75

#51B040 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.63

#51B040 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B040

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B040	#FFFFFF	#000000	##000000
##51B040	1.00	2.75	7.63	7.63
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.63	21.00	1.00	1.00
##000000	7.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4A133

Deuteranopia (green-blind)

#A89949

Tritanopia (blue-blind)

#46AB98

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51b040;
/* rgb */ color: rgb(81, 176, 64);
/* oklch */ color: oklch(67.6% 0.175 140.8);

Tailwind

colors: {
  custom: {
    50: '#8bc879',
    500: '#51b040',
    950: '#000000',
  },
}

SCSS

$custom: #51b040;
$custom-light: #8bc879;
$custom-dark: #000000;

JSON

{
  "hex": "#51b040",
  "rgb": {
    "r": 81,
    "g": 176,
    "b": 64
  },
  "hsl": {
    "h": 110.893,
    "s": 46.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.67566,
    "c": 0.17481,
    "h": 140.8
  },
  "luminance": 0.3317
}

Semantic roles & 50–950 ramp

primary

#51B040

secondary

#BA89C3

accent

#51D6C2

background

#F8FCF7

surface

#F0F8EE

border

#CBD1C9

text

#0D1309

muted

#7D827B

Preview Lab

Preview with #51B040

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

Preview Lab → · Contrast checker → · Palette generator →