#51BB5B#51BB5B

#51BB5B is a light, vivid green. Relative luminance 0.380; OKLCH L 70.8% C 0.166 H 145.3°. Best body text is #000000 at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#51BB5B
RGB	rgb(81, 187, 91)
HSL	hsl(126, 44%, 53%)
HSV	hsv(126, 57%, 73%)
CMYK	cmyk(56.7%, 0%, 51.3%, 26.7%)
CIE-LAB	lab(68.05, -50.49, 39.33)
CIE-LCH	lch(68.05, 64.00, 142.09°)
OKLab	oklab(70.75% -0.1368 0.0948)
OKLCH	oklch(70.75% 0.166 145.3)
XYZ	xyz(23.0506, 38.0433, 16.0239)
Luminance	0.3805 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB5B #BB51B1

analogous

#7CBB51 #51BB5B #51BB90

triadic

#51BB5B #5B51BB #BB5B51

tetradic

#51BB5B #517CBB #BB51B1 #BB9051

square

#51BB5B #517CBB #BB51B1 #BB9051

split-complementary

#51BB5B #9051BB #BB517C

monochromatic

#29692F #3A9543 #51BB5B #7DCC84 #A9DDAE

Accessibility & contrast

On white

2.44

#51BB5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.61

#51BB5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB5B

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB5B	#FFFFFF	#000000	##000000
##51BB5B	1.00	2.44	8.61	8.61
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.61	21.00	1.00	1.00
##000000	8.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BEAC53

Deuteranopia (green-blind)

#B0A262

Tritanopia (blue-blind)

#3DB7A5

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51bb5b;
/* rgb */ color: rgb(81, 187, 91);
/* oklch */ color: oklch(70.8% 0.166 145.3);

Tailwind

colors: {
  custom: {
    50: '#8bd08b',
    500: '#51bb5b',
    950: '#000000',
  },
}

SCSS

$custom: #51bb5b;
$custom-light: #8bd08b;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb5b",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 91
  },
  "hsl": {
    "h": 125.66,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.70752,
    "c": 0.16647,
    "h": 145.3
  },
  "luminance": 0.38045
}

Semantic roles & 50–950 ramp

primary

#51BB5B

secondary

#CB9DC7

accent

#54C8D4

background

#F9FCF8

surface

#F1F9F0

border

#CBD2CB

text

#0D140C

muted

#7E827D

Preview Lab

Preview with #51BB5B

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

Preview Lab → · Contrast checker → · Palette generator →