#51B237#51B237

#51B237 is a light, vivid green. Relative luminance 0.339; OKLCH L 68.0% C 0.184 H 139.8°. Best body text is #000000 at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#51B237
RGB	rgb(81, 178, 55)
HSL	hsl(107, 53%, 46%)
HSV	hsv(107, 69%, 70%)
CMYK	cmyk(54.5%, 0%, 69.1%, 30.2%)
CIE-LAB	lab(64.85, -51.10, 51.97)
CIE-LCH	lch(64.85, 72.89, 134.52°)
OKLab	oklab(68% -0.1403 0.1188)
OKLCH	oklch(68% 0.184 139.8)
XYZ	xyz(20.0025, 33.8643, 9.0961)
Luminance	0.3387 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B237 #9837B2

analogous

#8EB237 #51B237 #37B25A

triadic

#51B237 #3751B2 #B23751

tetradic

#51B237 #378EB2 #9837B2 #B25A37

square

#51B237 #378EB2 #9837B2 #B25A37

split-complementary

#51B237 #5A37B2 #B2378E

monochromatic

#26541A #3C8329 #51B237 #72CC5A #9ADB89

Accessibility & contrast

On white

2.70

#51B237 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.77

#51B237 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B237

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B237	#FFFFFF	#000000	##000000
##51B237	1.00	2.70	7.77	7.77
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.77	21.00	1.00	1.00
##000000	7.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A225

Deuteranopia (green-blind)

#AB9A42

Tritanopia (blue-blind)

#47AC99

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51b237;
/* rgb */ color: rgb(81, 178, 55);
/* oklch */ color: oklch(68.0% 0.184 139.8);

Tailwind

colors: {
  custom: {
    50: '#8bca74',
    500: '#51b237',
    950: '#000000',
  },
}

SCSS

$custom: #51b237;
$custom-light: #8bca74;
$custom-dark: #000000;

JSON

{
  "hex": "#51b237",
  "rgb": {
    "r": 81,
    "g": 178,
    "b": 55
  },
  "hsl": {
    "h": 107.317,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.68001,
    "c": 0.18383,
    "h": 139.8
  },
  "luminance": 0.33866
}

Semantic roles & 50–950 ramp

primary

#51B237

secondary

#B680C5

accent

#4CDCBE

background

#F9FCF7

surface

#F1F8ED

border

#CBD1C8

text

#0D1309

muted

#7E827B

Preview Lab

Preview with #51B237

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

Preview Lab → · Contrast checker → · Palette generator →