#66CE39#66CE39

#66CE39 is a light, highly saturated green. Relative luminance 0.473; OKLCH L 76.0% C 0.207 H 138.1°. Best body text is #000000 at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#66CE39
RGB	rgb(102, 206, 57)
HSL	hsl(102, 60%, 52%)
HSV	hsv(102, 72%, 81%)
CMYK	cmyk(50.5%, 0%, 72.3%, 19.2%)
CIE-LAB	lab(74.36, -55.64, 61.24)
CIE-LCH	lch(74.36, 82.74, 132.25°)
OKLab	oklab(76.04% -0.1538 0.1382)
OKLCH	oklch(76.04% 0.207 138.1)
XYZ	xyz(28.2883, 47.2607, 11.5017)
Luminance	0.4726 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CE39 #A139CE

analogous

#B1CE39 #66CE39 #39CE57

triadic

#66CE39 #3966CE #CE3966

tetradic

#66CE39 #39B1CE #A139CE #CE5739

square

#66CE39 #39B1CE #A139CE #CE5739

split-complementary

#66CE39 #5739CE #CE39B1

monochromatic

#36711C #4DA228 #66CE39 #8CDA6A #B2E69B

Accessibility & contrast

On white

2.01

#66CE39 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.45

#66CE39 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CE39

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CE39	#FFFFFF	#000000	##000000
##66CE39	1.00	2.01	10.45	10.45
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.45	21.00	1.00	1.00
##000000	10.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D4BC1E

Deuteranopia (green-blind)

#C7B448

Tritanopia (blue-blind)

#5EC7B1

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #66ce39;
/* rgb */ color: rgb(102, 206, 57);
/* oklch */ color: oklch(76.0% 0.207 138.1);

Tailwind

colors: {
  custom: {
    50: '#9bde79',
    500: '#66ce39',
    950: '#000000',
  },
}

SCSS

$custom: #66ce39;
$custom-light: #9bde79;
$custom-dark: #000000;

JSON

{
  "hex": "#66ce39",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 57
  },
  "hsl": {
    "h": 101.879,
    "s": 60.324,
    "l": 51.569
  },
  "oklch": {
    "l": 0.76042,
    "c": 0.20674,
    "h": 138.1
  },
  "luminance": 0.47263
}

Semantic roles & 50–950 ramp

primary

#66CE39

secondary

#BE91D2

accent

#44E3B3

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CE39

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

Preview Lab → · Contrast checker → · Palette generator →