#66D43C#66D43C

#66D43C is a light, highly saturated green. Relative luminance 0.502; OKLCH L 77.6% C 0.212 H 138.6°. Best body text is #000000 at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#66D43C
RGB	rgb(102, 212, 60)
HSL	hsl(103, 64%, 53%)
HSV	hsv(103, 72%, 83%)
CMYK	cmyk(51.9%, 0%, 71.7%, 16.9%)
CIE-LAB	lab(76.21, -57.66, 62.05)
CIE-LCH	lch(76.21, 84.70, 132.90°)
OKLab	oklab(77.58% -0.159 0.1403)
OKLCH	oklch(77.58% 0.212 138.6)
XYZ	xyz(29.8375, 50.2357, 12.3983)
Luminance	0.5024 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D43C #AA3CD4

analogous

#B2D43C #66D43C #3CD45E

triadic

#66D43C #3C66D4 #D43C66

tetradic

#66D43C #3CB2D4 #AA3CD4 #D45E3C

square

#66D43C #3CB2D4 #AA3CD4 #D45E3C

split-complementary

#66D43C #5E3CD4 #D43CB2

monochromatic

#357B1B #4BAD26 #66D43C #8DDF6E #B5EAA0

Accessibility & contrast

On white

1.90

#66D43C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.05

#66D43C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D43C

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D43C	#FFFFFF	#000000	##000000
##66D43C	1.00	1.90	11.05	11.05
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.05	21.00	1.00	1.00
##000000	11.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC221

Deuteranopia (green-blind)

#CCB84B

Tritanopia (blue-blind)

#5CCDB6

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66d43c;
/* rgb */ color: rgb(102, 212, 60);
/* oklch */ color: oklch(77.6% 0.212 138.6);

Tailwind

colors: {
  custom: {
    50: '#9ce27b',
    500: '#66d43c',
    950: '#000000',
  },
}

SCSS

$custom: #66d43c;
$custom-light: #9ce27b;
$custom-dark: #000000;

JSON

{
  "hex": "#66d43c",
  "rgb": {
    "r": 102,
    "g": 212,
    "b": 60
  },
  "hsl": {
    "h": 103.421,
    "s": 63.866,
    "l": 53.333
  },
  "oklch": {
    "l": 0.77578,
    "c": 0.21207,
    "h": 138.6
  },
  "luminance": 0.50238
}

Semantic roles & 50–950 ramp

primary

#66D43C

secondary

#6C3282

accent

#41E7B9

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F150A

muted

#80847D

Preview Lab

Preview with #66D43C

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

Preview Lab → · Contrast checker → · Palette generator →