#66DF40#66DF40

#66DF40 is a light, highly saturated green. Relative luminance 0.560; OKLCH L 80.4% C 0.223 H 139.3°. Best body text is #000000 at 12.19:1 contrast (WCAG AA passes).

Color values

HEX	#66DF40
RGB	rgb(102, 223, 64)
HSL	hsl(106, 71%, 56%)
HSV	hsv(106, 71%, 87%)
CMYK	cmyk(54.3%, 0%, 71.3%, 12.5%)
CIE-LAB	lab(79.60, -61.37, 64.06)
CIE-LCH	lch(79.60, 88.71, 133.77°)
OKLab	oklab(80.37% -0.1688 0.145)
OKLCH	oklch(80.37% 0.223 139.3)
XYZ	xyz(32.7912, 55.9676, 13.9243)
Luminance	0.5597 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DF40 #B940DF

analogous

#B6DF40 #66DF40 #40DF6A

triadic

#66DF40 #4066DF #DF4066

tetradic

#66DF40 #40B6DF #B940DF #DF6A40

square

#66DF40 #40B6DF #B940DF #DF6A40

split-complementary

#66DF40 #6A40DF #DF40B6

monochromatic

#348D18 #47C120 #66DF40 #90E874 #BAF1A9

Accessibility & contrast

On white

1.72

#66DF40 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.19

#66DF40 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DF40

12.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DF40	#FFFFFF	#000000	##000000
##66DF40	1.00	1.72	12.19	12.19
#FFFFFF	1.72	1.00	21.00	21.00
#000000	12.19	21.00	1.00	1.00
##000000	12.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E5CB24

Deuteranopia (green-blind)

#D6C150

Tritanopia (blue-blind)

#59D8C0

Achromatopsia (no color)

#C5C5C5

Design tokens & code

CSS

--color: #66df40;
/* rgb */ color: rgb(102, 223, 64);
/* oklch */ color: oklch(80.4% 0.223 139.3);

Tailwind

colors: {
  custom: {
    50: '#9dea7e',
    500: '#66df40',
    950: '#000000',
  },
}

SCSS

$custom: #66df40;
$custom-light: #9dea7e;
$custom-dark: #000000;

JSON

{
  "hex": "#66df40",
  "rgb": {
    "r": 102,
    "g": 223,
    "b": 64
  },
  "hsl": {
    "h": 105.66,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.80373,
    "c": 0.22254,
    "h": 139.3
  },
  "luminance": 0.5597
}

Semantic roles & 50–950 ramp

primary

#66DF40

secondary

#7B3192

accent

#3AEEC3

background

#FCFEFB

surface

#F6FDF2

border

#D0D5CC

text

#0F160B

muted

#80847E

Preview Lab

Preview with #66DF40

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

Preview Lab → · Contrast checker → · Palette generator →