#51B331#51B331

#51B331 is a light, vivid green. Relative luminance 0.342; OKLCH L 68.2% C 0.189 H 139.2°. Best body text is #000000 at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#51B331
RGB	rgb(81, 179, 49)
HSL	hsl(105, 57%, 45%)
HSV	hsv(105, 73%, 70%)
CMYK	cmyk(54.7%, 0%, 72.6%, 29.8%)
CIE-LAB	lab(65.13, -51.97, 54.57)
CIE-LCH	lch(65.13, 75.35, 133.60°)
OKLab	oklab(68.21% -0.143 0.1234)
OKLCH	oklch(68.21% 0.189 139.2)
XYZ	xyz(20.0670, 34.2096, 8.4508)
Luminance	0.3421 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B331 #9331B3

analogous

#92B331 #51B331 #31B352

triadic

#51B331 #3151B3 #B33151

tetradic

#51B331 #3192B3 #9331B3 #B35231

square

#51B331 #3192B3 #9331B3 #B35231

split-complementary

#51B331 #5231B3 #B33192

monochromatic

#265317 #3B8324 #51B331 #71D052 #98DD82

Accessibility & contrast

On white

2.68

#51B331 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.84

#51B331 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B331

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B331	#FFFFFF	#000000	##000000
##51B331	1.00	2.68	7.84	7.84
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.84	21.00	1.00	1.00
##000000	7.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8A31A

Deuteranopia (green-blind)

#AC9B3E

Tritanopia (blue-blind)

#47AD9A

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51b331;
/* rgb */ color: rgb(81, 179, 49);
/* oklch */ color: oklch(68.2% 0.189 139.2);

Tailwind

colors: {
  custom: {
    50: '#8cca71',
    500: '#51b331',
    950: '#000000',
  },
}

SCSS

$custom: #51b331;
$custom-light: #8cca71;
$custom-dark: #000000;

JSON

{
  "hex": "#51b331",
  "rgb": {
    "r": 81,
    "g": 179,
    "b": 49
  },
  "hsl": {
    "h": 105.231,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.68213,
    "c": 0.1889,
    "h": 139.2
  },
  "luminance": 0.34211
}

Semantic roles & 50–950 ramp

primary

#51B331

secondary

#B37AC6

accent

#48E0BB

background

#F9FCF7

surface

#F1F8ED

border

#CBD1C8

text

#0D1308

muted

#7E827B

Preview Lab

Preview with #51B331

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

Preview Lab → · Contrast checker → · Palette generator →