#51BF31#51BF31

#51BF31 is a light, highly saturated green. Relative luminance 0.392; OKLCH L 71.3% C 0.203 H 139.7°. Best body text is #000000 at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#51BF31
RGB	rgb(81, 191, 49)
HSL	hsl(106, 59%, 47%)
HSV	hsv(106, 74%, 75%)
CMYK	cmyk(57.6%, 0%, 74.3%, 25.1%)
CIE-LAB	lab(68.92, -56.37, 58.37)
CIE-LCH	lch(68.92, 81.14, 134.00°)
OKLab	oklab(71.34% -0.1549 0.1314)
OKLCH	oklch(71.34% 0.203 139.7)
XYZ	xyz(22.5775, 39.2307, 9.2876)
Luminance	0.3923 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BF31 #9F31BF

analogous

#98BF31 #51BF31 #31BF58

triadic

#51BF31 #3151BF #BF3151

tetradic

#51BF31 #3198BF #9F31BF #BF5831

square

#51BF31 #3198BF #9F31BF #BF5831

split-complementary

#51BF31 #5831BF #BF3198

monochromatic

#285E18 #3C8E25 #51BF31 #75D459 #9DE18A

Accessibility & contrast

On white

2.37

#51BF31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.85

#51BF31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BF31

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BF31	#FFFFFF	#000000	##000000
##51BF31	1.00	2.37	8.85	8.85
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.85	21.00	1.00	1.00
##000000	8.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4AE14

Deuteranopia (green-blind)

#B7A540

Tritanopia (blue-blind)

#44B9A4

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #51bf31;
/* rgb */ color: rgb(81, 191, 49);
/* oklch */ color: oklch(71.3% 0.203 139.7);

Tailwind

colors: {
  custom: {
    50: '#8ed373',
    500: '#51bf31',
    950: '#000000',
  },
}

SCSS

$custom: #51bf31;
$custom-light: #8ed373;
$custom-dark: #000000;

JSON

{
  "hex": "#51bf31",
  "rgb": {
    "r": 81,
    "g": 191,
    "b": 49
  },
  "hsl": {
    "h": 106.479,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.7134,
    "c": 0.20309,
    "h": 139.7
  },
  "luminance": 0.39233
}

Semantic roles & 50–950 ramp

primary

#51BF31

secondary

#BA81CB

accent

#45E2BF

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0D1409

muted

#7E837B

Preview Lab

Preview with #51BF31

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

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