#66E040#66E040

#66E040 is a light, highly saturated green. Relative luminance 0.565; OKLCH L 80.6% C 0.224 H 139.4°. Best body text is #000000 at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#66E040
RGB	rgb(102, 224, 64)
HSL	hsl(106, 72%, 56%)
HSV	hsv(106, 71%, 88%)
CMYK	cmyk(54.5%, 0%, 71.4%, 12.2%)
CIE-LAB	lab(79.90, -61.73, 64.37)
CIE-LCH	lch(79.90, 89.18, 133.80°)
OKLab	oklab(80.62% -0.1698 0.1457)
OKLCH	oklch(80.62% 0.224 139.4)
XYZ	xyz(33.0592, 56.5035, 14.0137)
Luminance	0.5651 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E040 #BA40E0

analogous

#B6E040 #66E040 #40E06A

triadic

#66E040 #4066E0 #E04066

tetradic

#66E040 #40B6E0 #BA40E0 #E06A40

square

#66E040 #40B6E0 #BA40E0 #E06A40

split-complementary

#66E040 #6A40E0 #E040B6

monochromatic

#338E17 #46C320 #66E040 #90E975 #BAF1A9

Accessibility & contrast

On white

1.71

#66E040 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.30

#66E040 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E040

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E040	#FFFFFF	#000000	##000000
##66E040	1.00	1.71	12.30	12.30
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.30	21.00	1.00	1.00
##000000	12.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E6CC24

Deuteranopia (green-blind)

#D7C250

Tritanopia (blue-blind)

#59D9C1

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #66e040;
/* rgb */ color: rgb(102, 224, 64);
/* oklch */ color: oklch(80.6% 0.224 139.4);

Tailwind

colors: {
  custom: {
    50: '#9deb7e',
    500: '#66e040',
    950: '#000000',
  },
}

SCSS

$custom: #66e040;
$custom-light: #9deb7e;
$custom-dark: #000000;

JSON

{
  "hex": "#66e040",
  "rgb": {
    "r": 102,
    "g": 224,
    "b": 64
  },
  "hsl": {
    "h": 105.75,
    "s": 72.072,
    "l": 56.471
  },
  "oklch": {
    "l": 0.80623,
    "c": 0.2237,
    "h": 139.4
  },
  "luminance": 0.56506
}

Semantic roles & 50–950 ramp

primary

#66E040

secondary

#7C3194

accent

#39EFC4

background

#FCFEFB

surface

#F6FDF2

border

#D0D5CC

text

#0F160B

muted

#80847E

Preview Lab

Preview with #66E040

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

Preview Lab → · Contrast checker → · Palette generator →