#66CE4E#66CE4E

#66CE4E is a light, vivid green. Relative luminance 0.475; OKLCH L 76.2% C 0.193 H 140.1°. Best body text is #000000 at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#66CE4E
RGB	rgb(102, 206, 78)
HSL	hsl(109, 57%, 56%)
HSV	hsv(109, 62%, 81%)
CMYK	cmyk(50.5%, 0%, 62.1%, 19.2%)
CIE-LAB	lab(74.52, -53.85, 53.11)
CIE-LCH	lch(74.52, 75.63, 135.40°)
OKLab	oklab(76.23% -0.1476 0.1236)
OKLCH	oklch(76.23% 0.193 140.1)
XYZ	xyz(28.9247, 47.5153, 14.8534)
Luminance	0.4752 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CE4E #B64ECE

analogous

#A6CE4E #66CE4E #4ECE76

triadic

#66CE4E #4E66CE #CE4E66

tetradic

#66CE4E #4EA6CE #B64ECE #CE764E

square

#66CE4E #4EA6CE #B64ECE #CE764E

split-complementary

#66CE4E #764ECE #CE4EA6

monochromatic

#347F23 #48AE30 #66CE4E #8FDB7E #B9E9AE

Accessibility & contrast

On white

2.00

#66CE4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.50

#66CE4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CE4E

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CE4E	#FFFFFF	#000000	##000000
##66CE4E	1.00	2.00	10.50	10.50
#FFFFFF	2.00	1.00	21.00	21.00
#000000	10.50	21.00	1.00	1.00
##000000	10.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BD3F

Deuteranopia (green-blind)

#C6B459

Tritanopia (blue-blind)

#5CC8B3

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #66ce4e;
/* rgb */ color: rgb(102, 206, 78);
/* oklch */ color: oklch(76.2% 0.193 140.1);

Tailwind

colors: {
  custom: {
    50: '#9ade84',
    500: '#66ce4e',
    950: '#000000',
  },
}

SCSS

$custom: #66ce4e;
$custom-light: #9ade84;
$custom-dark: #000000;

JSON

{
  "hex": "#66ce4e",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 78
  },
  "hsl": {
    "h": 108.75,
    "s": 56.637,
    "l": 55.686
  },
  "oklch": {
    "l": 0.76227,
    "c": 0.19251,
    "h": 140.1
  },
  "luminance": 0.47517
}

Semantic roles & 50–950 ramp

primary

#66CE4E

secondary

#CDA1D7

accent

#48E0C3

background

#FAFDF8

surface

#F3FBEF

border

#CDD4CA

text

#0F150B

muted

#7F837C

Preview Lab

Preview with #66CE4E

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

Preview Lab → · Contrast checker → · Palette generator →