#66BF3F#66BF3F

#66BF3F is a light, vivid green. Relative luminance 0.404; OKLCH L 72.3% C 0.185 H 137.7°. Best body text is #000000 at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#66BF3F
RGB	rgb(102, 191, 63)
HSL	hsl(102, 50%, 50%)
HSV	hsv(102, 67%, 75%)
CMYK	cmyk(46.6%, 0%, 67%, 25.1%)
CIE-LAB	lab(69.78, -49.37, 54.22)
CIE-LCH	lch(69.78, 73.33, 132.32°)
OKLab	oklab(72.3% -0.1364 0.1243)
OKLCH	oklch(72.3% 0.185 137.7)
XYZ	xyz(25.0067, 40.4436, 11.1904)
Luminance	0.4044 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BF3F #983FBF

analogous

#A6BF3F #66BF3F #3FBF58

triadic

#66BF3F #3F66BF #BF3F66

tetradic

#66BF3F #3FA6BF #983FBF #BF583F

square

#66BF3F #3FA6BF #983FBF #BF583F

split-complementary

#66BF3F #583FBF #BF3FA6

monochromatic

#356321 #4D9130 #66BF3F #8ACF6D #AFDE9B

Accessibility & contrast

On white

2.31

#66BF3F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.09

#66BF3F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BF3F

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BF3F	#FFFFFF	#000000	##000000
##66BF3F	1.00	2.31	9.09	9.09
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.09	21.00	1.00	1.00
##000000	9.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C5AF2D

Deuteranopia (green-blind)

#B9A84A

Tritanopia (blue-blind)

#60B8A5

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66bf3f;
/* rgb */ color: rgb(102, 191, 63);
/* oklch */ color: oklch(72.3% 0.185 137.7);

Tailwind

colors: {
  custom: {
    50: '#99d37a',
    500: '#66bf3f',
    950: '#000000',
  },
}

SCSS

$custom: #66bf3f;
$custom-light: #99d37a;
$custom-dark: #000000;

JSON

{
  "hex": "#66bf3f",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 63
  },
  "hsl": {
    "h": 101.719,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.72298,
    "c": 0.18454,
    "h": 137.7
  },
  "luminance": 0.40445
}

Semantic roles & 50–950 ramp

primary

#66BF3F

secondary

#B890CA

accent

#4EDAAF

background

#F9FDF7

surface

#F2FAEE

border

#CCD3C9

text

#0E140A

muted

#7E837C

Preview Lab

Preview with #66BF3F

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

Preview Lab → · Contrast checker → · Palette generator →