#51BB57#51BB57

#51BB57 is a light, vivid green. Relative luminance 0.380; OKLCH L 70.7% C 0.170 H 144.5°. Best body text is #000000 at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#51BB57
RGB	rgb(81, 187, 87)
HSL	hsl(123, 44%, 53%)
HSV	hsv(123, 57%, 73%)
CMYK	cmyk(56.7%, 0%, 53.5%, 26.7%)
CIE-LAB	lab(68.00, -51.04, 41.22)
CIE-LCH	lch(68.00, 65.60, 141.07°)
OKLab	oklab(70.69% -0.1385 0.0987)
OKLCH	oklch(70.69% 0.17 144.5)
XYZ	xyz(22.8826, 37.9761, 15.1392)
Luminance	0.3798 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB57 #BB51B5

analogous

#80BB51 #51BB57 #51BB8C

triadic

#51BB57 #5751BB #BB5751

tetradic

#51BB57 #5180BB #BB51B5 #BB8C51

square

#51BB57 #5180BB #BB51B5 #BB8C51

split-complementary

#51BB57 #8C51BB #BB5180

monochromatic

#29692D #3A953F #51BB57 #7DCC81 #A9DDAC

Accessibility & contrast

On white

2.44

#51BB57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.60

#51BB57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB57

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB57	#FFFFFF	#000000	##000000
##51BB57	1.00	2.44	8.60	8.60
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.60	21.00	1.00	1.00
##000000	8.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BEAB4E

Deuteranopia (green-blind)

#B0A25E

Tritanopia (blue-blind)

#3EB6A4

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51bb57;
/* rgb */ color: rgb(81, 187, 87);
/* oklch */ color: oklch(70.7% 0.170 144.5);

Tailwind

colors: {
  custom: {
    50: '#8bd089',
    500: '#51bb57',
    950: '#000000',
  },
}

SCSS

$custom: #51bb57;
$custom-light: #8bd089;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb57",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 87
  },
  "hsl": {
    "h": 123.396,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.70695,
    "c": 0.17006,
    "h": 144.5
  },
  "luminance": 0.37978
}

Semantic roles & 50–950 ramp

primary

#51BB57

secondary

#CB9DC8

accent

#54CCD4

background

#F9FCF8

surface

#F1F9F0

border

#CBD2CB

text

#0D140C

muted

#7E827D

Preview Lab

Preview with #51BB57

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

Preview Lab → · Contrast checker → · Palette generator →