#66CE3F#66CE3F

#66CE3F is a light, highly saturated green. Relative luminance 0.473; OKLCH L 76.1% C 0.203 H 138.5°. Best body text is #000000 at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#66CE3F
RGB	rgb(102, 206, 63)
HSL	hsl(104, 59%, 53%)
HSV	hsv(104, 69%, 81%)
CMYK	cmyk(50.5%, 0%, 69.4%, 19.2%)
CIE-LAB	lab(74.40, -55.19, 59.08)
CIE-LCH	lch(74.40, 80.84, 133.05°)
OKLab	oklab(76.09% -0.1522 0.1344)
OKLCH	oklch(76.09% 0.203 138.5)
XYZ	xyz(28.4470, 47.3242, 12.3371)
Luminance	0.4733 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CE3F #A73FCE

analogous

#AECE3F #66CE3F #3FCE5F

triadic

#66CE3F #3F66CE #CE3F66

tetradic

#66CE3F #3FAECE #A73FCE #CE5F3F

square

#66CE3F #3FAECE #A73FCE #CE5F3F

split-complementary

#66CE3F #5F3FCE #CE3FAE

monochromatic

#36751E #4CA62A #66CE3F #8DDA70 #B4E7A1

Accessibility & contrast

On white

2.01

#66CE3F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.47

#66CE3F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CE3F

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CE3F	#FFFFFF	#000000	##000000
##66CE3F	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)

#D4BC29

Deuteranopia (green-blind)

#C7B44C

Tritanopia (blue-blind)

#5DC7B2

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #66ce3f;
/* rgb */ color: rgb(102, 206, 63);
/* oklch */ color: oklch(76.1% 0.203 138.5);

Tailwind

colors: {
  custom: {
    50: '#9bde7c',
    500: '#66ce3f',
    950: '#000000',
  },
}

SCSS

$custom: #66ce3f;
$custom-light: #9bde7c;
$custom-dark: #000000;

JSON

{
  "hex": "#66ce3f",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 63
  },
  "hsl": {
    "h": 103.636,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.76088,
    "c": 0.20307,
    "h": 138.5
  },
  "luminance": 0.47326
}

Semantic roles & 50–950 ramp

primary

#66CE3F

secondary

#C295D3

accent

#45E3B8

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CE3F

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

Preview Lab → · Contrast checker → · Palette generator →