#51CB3B#51CB3B

#51CB3B is a light, highly saturated green. Relative luminance 0.448; OKLCH L 74.5% C 0.211 H 140.9°. Best body text is #000000 at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#51CB3B
RGB	rgb(81, 203, 59)
HSL	hsl(111, 58%, 51%)
HSV	hsv(111, 71%, 80%)
CMYK	cmyk(60.1%, 0%, 70.9%, 20.4%)
CIE-LAB	lab(72.74, -59.88, 58.65)
CIE-LCH	lch(72.74, 83.81, 135.59°)
OKLab	oklab(74.52% -0.1638 0.1333)
OKLCH	oklch(74.52% 0.211 140.9)
XYZ	xyz(25.5375, 44.7746, 11.4334)
Luminance	0.4478 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CB3B #B53BCB

analogous

#99CB3B #51CB3B #3BCB6D

triadic

#51CB3B #3B51CB #CB3B51

tetradic

#51CB3B #3B99CB #B53BCB #CB6D3B

square

#51CB3B #3B99CB #B53BCB #CB6D3B

split-complementary

#51CB3B #6D3BCB #CB3B99

monochromatic

#2A6E1D #3C9F2A #51CB3B #7CD86B #A7E59C

Accessibility & contrast

On white

2.11

#51CB3B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.96

#51CB3B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CB3B

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CB3B	#FFFFFF	#000000	##000000
##51CB3B	1.00	2.11	9.96	9.96
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.96	21.00	1.00	1.00
##000000	9.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B923

Deuteranopia (green-blind)

#C1AF49

Tritanopia (blue-blind)

#3FC5AF

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51cb3b;
/* rgb */ color: rgb(81, 203, 59);
/* oklch */ color: oklch(74.5% 0.211 140.9);

Tailwind

colors: {
  custom: {
    50: '#8fdc79',
    500: '#51cb3b',
    950: '#000000',
  },
}

SCSS

$custom: #51cb3b;
$custom-light: #8fdc79;
$custom-dark: #000000;

JSON

{
  "hex": "#51cb3b",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 59
  },
  "hsl": {
    "h": 110.833,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.74521,
    "c": 0.21116,
    "h": 140.9
  },
  "luminance": 0.44777
}

Semantic roles & 50–950 ramp

primary

#51CB3B

secondary

#C791D1

accent

#47E1CA

background

#F9FDF7

surface

#F2FBEE

border

#CCD4C9

text

#0E150A

muted

#7E837C

Preview Lab

Preview with #51CB3B

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

Preview Lab → · Contrast checker → · Palette generator →