#51B436#51B436

#51B436 is a light, vivid green. Relative luminance 0.347; OKLCH L 68.5% C 0.187 H 139.7°. Best body text is #000000 at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#51B436
RGB	rgb(81, 180, 54)
HSL	hsl(107, 54%, 46%)
HSV	hsv(107, 70%, 71%)
CMYK	cmyk(55%, 0%, 70%, 29.4%)
CIE-LAB	lab(65.48, -51.94, 53.03)
CIE-LCH	lch(65.48, 74.23, 134.41°)
OKLab	oklab(68.52% -0.1427 0.1208)
OKLCH	oklch(68.52% 0.187 139.7)
XYZ	xyz(20.3796, 34.6565, 9.1048)
Luminance	0.3466 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B436 #9936B4

analogous

#90B436 #51B436 #36B45A

triadic

#51B436 #3651B4 #B43651

tetradic

#51B436 #3690B4 #9936B4 #B45A36

square

#51B436 #3690B4 #9936B4 #B45A36

split-complementary

#51B436 #5A36B4 #B43690

monochromatic

#27561A #3C8528 #51B436 #73CD5A #9BDC89

Accessibility & contrast

On white

2.65

#51B436 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.93

#51B436 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B436

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B436	#FFFFFF	#000000	##000000
##51B436	1.00	2.65	7.93	7.93
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.93	21.00	1.00	1.00
##000000	7.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A423

Deuteranopia (green-blind)

#AC9C42

Tritanopia (blue-blind)

#46AE9B

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51b436;
/* rgb */ color: rgb(81, 180, 54);
/* oklch */ color: oklch(68.5% 0.187 139.7);

Tailwind

colors: {
  custom: {
    50: '#8ccb74',
    500: '#51b436',
    950: '#000000',
  },
}

SCSS

$custom: #51b436;
$custom-light: #8ccb74;
$custom-dark: #000000;

JSON

{
  "hex": "#51b436",
  "rgb": {
    "r": 81,
    "g": 180,
    "b": 54
  },
  "hsl": {
    "h": 107.143,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.68515,
    "c": 0.18696,
    "h": 139.7
  },
  "luminance": 0.34658
}

Semantic roles & 50–950 ramp

primary

#51B436

secondary

#B780C6

accent

#4BDDBE

background

#F9FCF7

surface

#F1F9ED

border

#CBD2C8

text

#0D1309

muted

#7E827B

Preview Lab

Preview with #51B436

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

Preview Lab → · Contrast checker → · Palette generator →