#51C831#51C831

#51C831 is a light, highly saturated green. Relative luminance 0.433; OKLCH L 73.7% C 0.213 H 140.0°. Best body text is #000000 at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#51C831
RGB	rgb(81, 200, 49)
HSL	hsl(107, 61%, 49%)
HSV	hsv(107, 76%, 78%)
CMYK	cmyk(59.5%, 0%, 75.5%, 21.6%)
CIE-LAB	lab(71.74, -59.56, 61.16)
CIE-LCH	lch(71.74, 85.37, 134.24°)
OKLab	oklab(73.67% -0.1635 0.1372)
OKLCH	oklch(73.67% 0.213 140)
XYZ	xyz(24.6009, 43.2774, 9.9621)
Luminance	0.4328 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C831 #A831C8

analogous

#9DC831 #51C831 #31C85D

triadic

#51C831 #3151C8 #C83151

tetradic

#51C831 #319DC8 #A831C8 #C85D31

square

#51C831 #319DC8 #A831C8 #C85D31

split-complementary

#51C831 #5D31C8 #C8319D

monochromatic

#296619 #3D9725 #51C831 #78D85F #A1E490

Accessibility & contrast

On white

2.17

#51C831 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.66

#51C831 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C831

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C831	#FFFFFF	#000000	##000000
##51C831	1.00	2.17	9.66	9.66
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.66	21.00	1.00	1.00
##000000	9.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CEB60D

Deuteranopia (green-blind)

#BFAC41

Tritanopia (blue-blind)

#41C1AB

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #51c831;
/* rgb */ color: rgb(81, 200, 49);
/* oklch */ color: oklch(73.7% 0.213 140.0);

Tailwind

colors: {
  custom: {
    50: '#8fda74',
    500: '#51c831',
    950: '#000000',
  },
}

SCSS

$custom: #51c831;
$custom-light: #8fda74;
$custom-dark: #000000;

JSON

{
  "hex": "#51c831",
  "rgb": {
    "r": 81,
    "g": 200,
    "b": 49
  },
  "hsl": {
    "h": 107.285,
    "s": 60.643,
    "l": 48.824
  },
  "oklch": {
    "l": 0.73674,
    "c": 0.21342,
    "h": 140
  },
  "luminance": 0.4328
}

Semantic roles & 50–950 ramp

primary

#51C831

secondary

#BF86CE

accent

#44E4C2

background

#F9FDF7

surface

#F2FBED

border

#CCD4C8

text

#0E1509

muted

#7E837B

Preview Lab

Preview with #51C831

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

Preview Lab → · Contrast checker → · Palette generator →