#51CB4B#51CB4B

#51CB4B is a light, highly saturated green. Relative luminance 0.450; OKLCH L 74.7% C 0.200 H 142.5°. Best body text is #000000 at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#51CB4B
RGB	rgb(81, 203, 75)
HSL	hsl(117, 55%, 55%)
HSV	hsv(117, 63%, 80%)
CMYK	cmyk(60.1%, 0%, 63.1%, 20.4%)
CIE-LAB	lab(72.87, -58.41, 52.37)
CIE-LCH	lch(72.87, 78.45, 138.12°)
OKLab	oklab(74.67% -0.159 0.1218)
OKLCH	oklch(74.67% 0.2 142.5)
XYZ	xyz(26.0179, 44.9668, 13.9636)
Luminance	0.4497 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CB4B #C54BCB

analogous

#91CB4B #51CB4B #4BCB85

triadic

#51CB4B #4B51CB #CB4B51

tetradic

#51CB4B #4B91CB #C54BCB #CB854B

square

#51CB4B #4B91CB #C54BCB #CB854B

split-complementary

#51CB4B #854BCB #CB4B91

monochromatic

#277923 #36A831 #51CB4B #7FD97A #ADE6AA

Accessibility & contrast

On white

2.10

#51CB4B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.99

#51CB4B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CB4B

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CB4B	#FFFFFF	#000000	##000000
##51CB4B	1.00	2.10	9.99	9.99
#FFFFFF	2.10	1.00	21.00	21.00
#000000	9.99	21.00	1.00	1.00
##000000	9.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CFB93C

Deuteranopia (green-blind)

#C0AF56

Tritanopia (blue-blind)

#3CC5B0

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #51cb4b;
/* rgb */ color: rgb(81, 203, 75);
/* oklch */ color: oklch(74.7% 0.200 142.5);

Tailwind

colors: {
  custom: {
    50: '#8fdc82',
    500: '#51cb4b',
    950: '#000000',
  },
}

SCSS

$custom: #51cb4b;
$custom-light: #8fdc82;
$custom-dark: #000000;

JSON

{
  "hex": "#51cb4b",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 75
  },
  "hsl": {
    "h": 117.188,
    "s": 55.172,
    "l": 54.51
  },
  "oklch": {
    "l": 0.74666,
    "c": 0.20029,
    "h": 142.5
  },
  "luminance": 0.44969
}

Semantic roles & 50–950 ramp

primary

#51CB4B

secondary

#D19ED4

accent

#49DFD8

background

#F9FDF8

surface

#F2FBEF

border

#CCD4CA

text

#0E150B

muted

#7E837C

Preview Lab

Preview with #51CB4B

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

Preview Lab → · Contrast checker → · Palette generator →