#66CE40#66CE40

#66CE40 is a light, highly saturated green. Relative luminance 0.473; OKLCH L 76.1% C 0.202 H 138.6°. Best body text is #000000 at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#66CE40
RGB	rgb(102, 206, 64)
HSL	hsl(104, 59%, 53%)
HSV	hsv(104, 69%, 81%)
CMYK	cmyk(50.5%, 0%, 68.9%, 19.2%)
CIE-LAB	lab(74.40, -55.11, 58.70)
CIE-LCH	lch(74.40, 80.52, 133.19°)
OKLab	oklab(76.1% -0.1519 0.1338)
OKLCH	oklch(76.1% 0.202 138.6)
XYZ	xyz(28.4752, 47.3354, 12.4857)
Luminance	0.4734 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CE40 #A840CE

analogous

#ADCE40 #66CE40 #40CE61

triadic

#66CE40 #4066CE #CE4066

tetradic

#66CE40 #40ADCE #A840CE #CE6140

square

#66CE40 #40ADCE #A840CE #CE6140

split-complementary

#66CE40 #6140CE #CE40AD

monochromatic

#36751E #4CA62B #66CE40 #8DDA71 #B4E7A1

Accessibility & contrast

On white

2.01

#66CE40 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.47

#66CE40 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CE40

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CE40	#FFFFFF	#000000	##000000
##66CE40	1.00	2.01	10.47	10.47
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.47	21.00	1.00	1.00
##000000	10.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D4BC2B

Deuteranopia (green-blind)

#C7B44D

Tritanopia (blue-blind)

#5DC7B2

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #66ce40;
/* rgb */ color: rgb(102, 206, 64);
/* oklch */ color: oklch(76.1% 0.202 138.6);

Tailwind

colors: {
  custom: {
    50: '#9bde7c',
    500: '#66ce40',
    950: '#000000',
  },
}

SCSS

$custom: #66ce40;
$custom-light: #9bde7c;
$custom-dark: #000000;

JSON

{
  "hex": "#66ce40",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 64
  },
  "hsl": {
    "h": 103.944,
    "s": 59.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.76097,
    "c": 0.20243,
    "h": 138.6
  },
  "luminance": 0.47338
}

Semantic roles & 50–950 ramp

primary

#66CE40

secondary

#C396D4

accent

#45E2B8

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CE40

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

Preview Lab → · Contrast checker → · Palette generator →