#66D437#66D437

#66D437 is a light, highly saturated green. Relative luminance 0.502; OKLCH L 77.5% C 0.215 H 138.2°. Best body text is #000000 at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#66D437
RGB	rgb(102, 212, 55)
HSL	hsl(102, 65%, 52%)
HSV	hsv(102, 74%, 83%)
CMYK	cmyk(51.9%, 0%, 74.1%, 16.9%)
CIE-LAB	lab(76.18, -58.00, 63.76)
CIE-LCH	lch(76.18, 86.19, 132.29°)
OKLab	oklab(77.54% -0.1603 0.1432)
OKLCH	oklch(77.54% 0.215 138.2)
XYZ	xyz(29.7115, 50.1853, 11.7348)
Luminance	0.5019 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D437 #A537D4

analogous

#B5D437 #66D437 #37D456

triadic

#66D437 #3766D4 #D43766

tetradic

#66D437 #37B5D4 #A537D4 #D45637

square

#66D437 #37B5D4 #A537D4 #D45637

split-complementary

#66D437 #5637D4 #D437B5

monochromatic

#36771A #4CA924 #66D437 #8DDF69 #B3EA9C

Accessibility & contrast

On white

1.90

#66D437 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.04

#66D437 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D437

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D437	#FFFFFF	#000000	##000000
##66D437	1.00	1.90	11.04	11.04
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.04	21.00	1.00	1.00
##000000	11.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DBC216

Deuteranopia (green-blind)

#CCB847

Tritanopia (blue-blind)

#5DCDB6

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66d437;
/* rgb */ color: rgb(102, 212, 55);
/* oklch */ color: oklch(77.5% 0.215 138.2);

Tailwind

colors: {
  custom: {
    50: '#9ce278',
    500: '#66d437',
    950: '#000000',
  },
}

SCSS

$custom: #66d437;
$custom-light: #9ce278;
$custom-dark: #000000;

JSON

{
  "hex": "#66d437",
  "rgb": {
    "r": 102,
    "g": 212,
    "b": 55
  },
  "hsl": {
    "h": 102.038,
    "s": 64.609,
    "l": 52.353
  },
  "oklch": {
    "l": 0.77542,
    "c": 0.21491,
    "h": 138.2
  },
  "luminance": 0.50188
}

Semantic roles & 50–950 ramp

primary

#66D437

secondary

#67307F

accent

#40E8B5

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F150A

muted

#80847D

Preview Lab

Preview with #66D437

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

Preview Lab → · Contrast checker → · Palette generator →