#51B439#51B439

#51B439 is a light, vivid green. Relative luminance 0.347; OKLCH L 68.5% C 0.185 H 140.0°. Best body text is #000000 at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#51B439
RGB	rgb(81, 180, 57)
HSL	hsl(108, 52%, 46%)
HSV	hsv(108, 68%, 71%)
CMYK	cmyk(55%, 0%, 68.3%, 29.4%)
CIE-LAB	lab(65.50, -51.69, 51.86)
CIE-LCH	lch(65.50, 73.22, 134.91°)
OKLab	oklab(68.54% -0.1418 0.1188)
OKLCH	oklch(68.54% 0.185 140)
XYZ	xyz(20.4522, 34.6856, 9.4873)
Luminance	0.3469 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B439 #9C39B4

analogous

#8FB439 #51B439 #39B45F

triadic

#51B439 #3951B4 #B43951

tetradic

#51B439 #398FB4 #9C39B4 #B45F39

square

#51B439 #398FB4 #9C39B4 #B45F39

split-complementary

#51B439 #5F39B4 #B4398F

monochromatic

#27571C #3C862A #51B439 #74CC5E #9CDB8D

Accessibility & contrast

On white

2.65

#51B439 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.94

#51B439 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B439

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B439	#FFFFFF	#000000	##000000
##51B439	1.00	2.65	7.94	7.94
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.94	21.00	1.00	1.00
##000000	7.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A428

Deuteranopia (green-blind)

#AC9C44

Tritanopia (blue-blind)

#46AE9B

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51b439;
/* rgb */ color: rgb(81, 180, 57);
/* oklch */ color: oklch(68.5% 0.185 140.0);

Tailwind

colors: {
  custom: {
    50: '#8ccb76',
    500: '#51b439',
    950: '#000000',
  },
}

SCSS

$custom: #51b439;
$custom-light: #8ccb76;
$custom-dark: #000000;

JSON

{
  "hex": "#51b439",
  "rgb": {
    "r": 81,
    "g": 180,
    "b": 57
  },
  "hsl": {
    "h": 108.293,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.68541,
    "c": 0.18495,
    "h": 140
  },
  "luminance": 0.34687
}

Semantic roles & 50–950 ramp

primary

#51B439

secondary

#B883C5

accent

#4CDBBF

background

#F9FCF7

surface

#F1F9ED

border

#CBD2C8

text

#0D1309

muted

#7E827B

Preview Lab

Preview with #51B439

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

Preview Lab → · Contrast checker → · Palette generator →