#51B481#51B481

#51B481 is a light, vivid green. Relative luminance 0.360; OKLCH L 69.7% C 0.121 H 158.5°. Best body text is #000000 at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#51B481
RGB	rgb(81, 180, 129)
HSL	hsl(149, 40%, 51%)
HSV	hsv(149, 55%, 71%)
CMYK	cmyk(55%, 0%, 28.3%, 29.4%)
CIE-LAB	lab(66.50, -41.01, 17.43)
CIE-LCH	lch(66.50, 44.56, 156.97°)
OKLab	oklab(69.68% -0.1123 0.0443)
OKLCH	oklch(69.68% 0.121 158.5)
XYZ	xyz(23.6750, 35.9747, 26.4608)
Luminance	0.3598 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B481 #B45184

analogous

#52B451 #51B481 #51B4B2

triadic

#51B481 #8151B4 #B48151

tetradic

#51B481 #5152B4 #B45184 #B4B251

square

#51B481 #5152B4 #B45184 #B4B251

split-complementary

#51B481 #B251B4 #B45152

monochromatic

#2A6144 #3C8C63 #51B481 #7CC6A0 #A7D9BF

Accessibility & contrast

On white

2.56

#51B481 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.20

#51B481 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B481

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B481	#FFFFFF	#000000	##000000
##51B481	1.00	2.56	8.20	8.20
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.20	21.00	1.00	1.00
##000000	8.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2A87E

Deuteranopia (green-blind)

#A49E84

Tritanopia (blue-blind)

#30B3A6

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #51b481;
/* rgb */ color: rgb(81, 180, 129);
/* oklch */ color: oklch(69.7% 0.121 158.5);

Tailwind

colors: {
  custom: {
    50: '#8acba5',
    500: '#51b481',
    950: '#000000',
  },
}

SCSS

$custom: #51b481;
$custom-light: #8acba5;
$custom-dark: #000000;

JSON

{
  "hex": "#51b481",
  "rgb": {
    "r": 81,
    "g": 180,
    "b": 129
  },
  "hsl": {
    "h": 149.091,
    "s": 39.759,
    "l": 51.176
  },
  "oklch": {
    "l": 0.69684,
    "c": 0.12072,
    "h": 158.5
  },
  "luminance": 0.35977
}

Semantic roles & 50–950 ramp

primary

#51B481

secondary

#C69BB1

accent

#5896D0

background

#F8FCFA

surface

#F0F8F4

border

#CBD1CE

text

#0C130F

muted

#7D827F

Preview Lab

Preview with #51B481

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

Preview Lab → · Contrast checker → · Palette generator →