#51B166#51B166

#51B166 is a light, vivid green. Relative luminance 0.342; OKLCH L 68.4% C 0.142 H 148.6°. Best body text is #000000 at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#51B166
RGB	rgb(81, 177, 102)
HSL	hsl(133, 38%, 51%)
HSV	hsv(133, 54%, 69%)
CMYK	cmyk(54.2%, 0%, 42.4%, 30.6%)
CIE-LAB	lab(65.08, -44.78, 29.98)
CIE-LCH	lch(65.08, 53.89, 146.20°)
OKLab	oklab(68.36% -0.1213 0.074)
OKLCH	oklch(68.36% 0.142 148.6)
XYZ	xyz(21.5123, 34.1511, 18.0260)
Luminance	0.3415 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B166 #B1519C

analogous

#6CB151 #51B166 #51B196

triadic

#51B166 #6651B1 #B16651

tetradic

#51B166 #516CB1 #B1519C #B19651

square

#51B166 #516CB1 #B1519C #B19651

split-complementary

#51B166 #9651B1 #B1516C

monochromatic

#2A5E35 #3D884D #51B166 #7BC48B #A6D7B0

Accessibility & contrast

On white

2.68

#51B166 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.83

#51B166 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B166

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B166	#FFFFFF	#000000	##000000
##51B166	1.00	2.68	7.83	7.83
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.83	21.00	1.00	1.00
##000000	7.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3A361

Deuteranopia (green-blind)

#A59A6B

Tritanopia (blue-blind)

#3CAE9F

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51b166;
/* rgb */ color: rgb(81, 177, 102);
/* oklch */ color: oklch(68.4% 0.142 148.6);

Tailwind

colors: {
  custom: {
    50: '#89c992',
    500: '#51b166',
    950: '#000000',
  },
}

SCSS

$custom: #51b166;
$custom-light: #89c992;
$custom-dark: #000000;

JSON

{
  "hex": "#51b166",
  "rgb": {
    "r": 81,
    "g": 177,
    "b": 102
  },
  "hsl": {
    "h": 133.125,
    "s": 38.095,
    "l": 50.588
  },
  "oklch": {
    "l": 0.68364,
    "c": 0.14214,
    "h": 148.6
  },
  "luminance": 0.34153
}

Semantic roles & 50–950 ramp

primary

#51B166

secondary

#C49ABB

accent

#5AB5CE

background

#F8FCF9

surface

#F0F8F1

border

#CBD1CB

text

#0C130D

muted

#7D827E

Preview Lab

Preview with #51B166

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

Preview Lab → · Contrast checker → · Palette generator →