#51B151#51B151

#51B151 is a light, vivid green. Relative luminance 0.338; OKLCH L 68.0% C 0.162 H 143.5°. Best body text is #000000 at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#51B151
RGB	rgb(81, 177, 81)
HSL	hsl(120, 38%, 51%)
HSV	hsv(120, 54%, 69%)
CMYK	cmyk(54.2%, 0%, 54.2%, 30.6%)
CIE-LAB	lab(64.79, -47.91, 40.27)
CIE-LCH	lch(64.79, 62.58, 139.95°)
OKLab	oklab(68.03% -0.1302 0.0962)
OKLCH	oklch(68.03% 0.162 143.5)
XYZ	xyz(20.5996, 33.7860, 13.2188)
Luminance	0.3379 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B151 #B151B1

analogous

#81B151 #51B151 #51B181

triadic

#51B151 #5151B1 #B15151

tetradic

#51B151 #5181B1 #B151B1 #B18151

square

#51B151 #5181B1 #B151B1 #B18151

split-complementary

#51B151 #8151B1 #B15181

monochromatic

#2A5E2A #3D883D #51B151 #7BC47B #A6D7A6

Accessibility & contrast

On white

2.71

#51B151 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.76

#51B151 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B151

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B151	#FFFFFF	#000000	##000000
##51B151	1.00	2.71	7.76	7.76
#FFFFFF	2.71	1.00	21.00	21.00
#000000	7.76	21.00	1.00	1.00
##000000	7.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4A248

Deuteranopia (green-blind)

#A89A58

Tritanopia (blue-blind)

#42AC9B

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51b151;
/* rgb */ color: rgb(81, 177, 81);
/* oklch */ color: oklch(68.0% 0.162 143.5);

Tailwind

colors: {
  custom: {
    50: '#8ac984',
    500: '#51b151',
    950: '#000000',
  },
}

SCSS

$custom: #51b151;
$custom-light: #8ac984;
$custom-dark: #000000;

JSON

{
  "hex": "#51b151",
  "rgb": {
    "r": 81,
    "g": 177,
    "b": 81
  },
  "hsl": {
    "h": 120,
    "s": 38.095,
    "l": 50.588
  },
  "oklch": {
    "l": 0.68032,
    "c": 0.16191,
    "h": 143.5
  },
  "luminance": 0.33788
}

Semantic roles & 50–950 ramp

primary

#51B151

secondary

#C49AC4

accent

#5ACECE

background

#F8FCF8

surface

#F0F8EF

border

#CBD1CA

text

#0C130B

muted

#7D827C

Preview Lab

Preview with #51B151

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

Preview Lab → · Contrast checker → · Palette generator →