#51B131#51B131

#51B131 is a light, vivid green. Relative luminance 0.334; OKLCH L 67.7% C 0.186 H 139.1°. Best body text is #000000 at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#51B131
RGB	rgb(81, 177, 49)
HSL	hsl(105, 57%, 44%)
HSV	hsv(105, 72%, 69%)
CMYK	cmyk(54.2%, 0%, 72.3%, 30.6%)
CIE-LAB	lab(64.49, -51.21, 53.92)
CIE-LCH	lch(64.49, 74.37, 133.53°)
OKLab	oklab(67.69% -0.141 0.1221)
OKLCH	oklch(67.69% 0.186 139.1)
XYZ	xyz(19.6691, 33.4138, 8.3182)
Luminance	0.3342 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B131 #9131B1

analogous

#91B131 #51B131 #31B151

triadic

#51B131 #3151B1 #B13151

tetradic

#51B131 #3191B1 #9131B1 #B15131

square

#51B131 #3191B1 #9131B1 #B15131

split-complementary

#51B131 #5131B1 #B13191

monochromatic

#255116 #3B8124 #51B131 #70CF51 #97DC80

Accessibility & contrast

On white

2.73

#51B131 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.68

#51B131 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B131

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B131	#FFFFFF	#000000	##000000
##51B131	1.00	2.73	7.68	7.68
#FFFFFF	2.73	1.00	21.00	21.00
#000000	7.68	21.00	1.00	1.00
##000000	7.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6A11B

Deuteranopia (green-blind)

#AA993E

Tritanopia (blue-blind)

#48AB98

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51b131;
/* rgb */ color: rgb(81, 177, 49);
/* oklch */ color: oklch(67.7% 0.186 139.1);

Tailwind

colors: {
  custom: {
    50: '#8bc971',
    500: '#51b131',
    950: '#000000',
  },
}

SCSS

$custom: #51b131;
$custom-light: #8bc971;
$custom-dark: #000000;

JSON

{
  "hex": "#51b131",
  "rgb": {
    "r": 81,
    "g": 177,
    "b": 49
  },
  "hsl": {
    "h": 105,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.67691,
    "c": 0.18649,
    "h": 139.1
  },
  "luminance": 0.33415
}

Semantic roles & 50–950 ramp

primary

#51B131

secondary

#B279C5

accent

#48E0BA

background

#F9FCF7

surface

#F1F8ED

border

#CBD1C8

text

#0D1308

muted

#7E827B

Preview Lab

Preview with #51B131

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

Preview Lab → · Contrast checker → · Palette generator →