#66DA39#66DA39

#66DA39 is a light, highly saturated green. Relative luminance 0.533; OKLCH L 79.1% C 0.221 H 138.6°. Best body text is #000000 at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#66DA39
RGB	rgb(102, 218, 57)
HSL	hsl(103, 69%, 54%)
HSV	hsv(103, 74%, 85%)
CMYK	cmyk(53.2%, 0%, 73.9%, 14.5%)
CIE-LAB	lab(78.03, -60.06, 64.91)
CIE-LCH	lch(78.03, 88.43, 132.78°)
OKLab	oklab(79.07% -0.1657 0.1459)
OKLCH	oklch(79.07% 0.221 138.6)
XYZ	xyz(31.2882, 53.2605, 12.5016)
Luminance	0.5326 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DA39 #AD39DA

analogous

#B7DA39 #66DA39 #39DA5D

triadic

#66DA39 #3966DA #DA3966

tetradic

#66DA39 #39B7DA #AD39DA #DA5D39

square

#66DA39 #39B7DA #AD39DA #DA5D39

split-complementary

#66DA39 #5D39DA #DA39B7

monochromatic

#358118 #4BB422 #66DA39 #8EE46D #B6EDA0

Accessibility & contrast

On white

1.80

#66DA39 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.65

#66DA39 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DA39

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DA39	#FFFFFF	#000000	##000000
##66DA39	1.00	1.80	11.65	11.65
#FFFFFF	1.80	1.00	21.00	21.00
#000000	11.65	21.00	1.00	1.00
##000000	11.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1C717

Deuteranopia (green-blind)

#D2BD4A

Tritanopia (blue-blind)

#5BD3BB

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #66da39;
/* rgb */ color: rgb(102, 218, 57);
/* oklch */ color: oklch(79.1% 0.221 138.6);

Tailwind

colors: {
  custom: {
    50: '#9ce67a',
    500: '#66da39',
    950: '#000000',
  },
}

SCSS

$custom: #66da39;
$custom-light: #9ce67a;
$custom-dark: #000000;

JSON

{
  "hex": "#66da39",
  "rgb": {
    "r": 102,
    "g": 218,
    "b": 57
  },
  "hsl": {
    "h": 103.23,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.79067,
    "c": 0.22074,
    "h": 138.6
  },
  "luminance": 0.53263
}

Semantic roles & 50–950 ramp

primary

#66DA39

secondary

#6F3088

accent

#3CEBBA

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F160A

muted

#80847D

Preview Lab

Preview with #66DA39

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

Preview Lab → · Contrast checker → · Palette generator →