#51BB59#51BB59

#51BB59 is a light, vivid green. Relative luminance 0.380; OKLCH L 70.7% C 0.168 H 144.9°. Best body text is #000000 at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#51BB59
RGB	rgb(81, 187, 89)
HSL	hsl(125, 44%, 53%)
HSV	hsv(125, 57%, 73%)
CMYK	cmyk(56.7%, 0%, 52.4%, 26.7%)
CIE-LAB	lab(68.03, -50.77, 40.28)
CIE-LCH	lch(68.03, 64.80, 141.57°)
OKLab	oklab(70.72% -0.1377 0.0968)
OKLCH	oklch(70.72% 0.168 144.9)
XYZ	xyz(22.9655, 38.0092, 15.5755)
Luminance	0.3801 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB59 #BB51B3

analogous

#7EBB51 #51BB59 #51BB8E

triadic

#51BB59 #5951BB #BB5951

tetradic

#51BB59 #517EBB #BB51B3 #BB8E51

square

#51BB59 #517EBB #BB51B3 #BB8E51

split-complementary

#51BB59 #8E51BB #BB517E

monochromatic

#29692E #3A9541 #51BB59 #7DCC83 #A9DDAD

Accessibility & contrast

On white

2.44

#51BB59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.60

#51BB59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB59

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB59	#FFFFFF	#000000	##000000
##51BB59	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)

#BEAC50

Deuteranopia (green-blind)

#B0A260

Tritanopia (blue-blind)

#3DB7A5

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51bb59;
/* rgb */ color: rgb(81, 187, 89);
/* oklch */ color: oklch(70.7% 0.168 144.9);

Tailwind

colors: {
  custom: {
    50: '#8bd08a',
    500: '#51bb59',
    950: '#000000',
  },
}

SCSS

$custom: #51bb59;
$custom-light: #8bd08a;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb59",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 89
  },
  "hsl": {
    "h": 124.528,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.70723,
    "c": 0.16827,
    "h": 144.9
  },
  "luminance": 0.38011
}

Semantic roles & 50–950 ramp

primary

#51BB59

secondary

#CB9DC7

accent

#54CAD4

background

#F9FCF8

surface

#F1F9F0

border

#CBD2CB

text

#0D140C

muted

#7E827D

Preview Lab

Preview with #51BB59

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

Preview Lab → · Contrast checker → · Palette generator →