#66BF31#66BF31

#66BF31 is a light, vivid yellow-green. Relative luminance 0.403; OKLCH L 72.2% C 0.193 H 136.5°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#66BF31
RGB	rgb(102, 191, 49)
HSL	hsl(98, 59%, 47%)
HSV	hsv(98, 74%, 75%)
CMYK	cmyk(46.6%, 0%, 74.3%, 25.1%)
CIE-LAB	lab(69.69, -50.42, 59.39)
CIE-LCH	lch(69.69, 77.91, 130.33°)
OKLab	oklab(72.19% -0.1402 0.1332)
OKLCH	oklch(72.19% 0.193 136.5)
XYZ	xyz(24.6640, 40.3065, 9.3854)
Luminance	0.4031 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BF31 #8A31BF

analogous

#ADBF31 #66BF31 #31BF43

triadic

#66BF31 #3166BF #BF3166

tetradic

#66BF31 #31ADBF #8A31BF #BF4331

square

#66BF31 #31ADBF #8A31BF #BF4331

split-complementary

#66BF31 #4331BF #BF31AD

monochromatic

#325E18 #4C8E25 #66BF31 #87D459 #AAE18A

Accessibility & contrast

On white

2.32

#66BF31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.06

#66BF31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BF31

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BF31	#FFFFFF	#000000	##000000
##66BF31	1.00	2.32	9.06	9.06
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.06	21.00	1.00	1.00
##000000	9.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6AF13

Deuteranopia (green-blind)

#BAA840

Tritanopia (blue-blind)

#62B8A4

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66bf31;
/* rgb */ color: rgb(102, 191, 49);
/* oklch */ color: oklch(72.2% 0.193 136.5);

Tailwind

colors: {
  custom: {
    50: '#99d373',
    500: '#66bf31',
    950: '#000000',
  },
}

SCSS

$custom: #66bf31;
$custom-light: #99d373;
$custom-dark: #000000;

JSON

{
  "hex": "#66bf31",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 49
  },
  "hsl": {
    "h": 97.606,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.72187,
    "c": 0.19341,
    "h": 136.5
  },
  "luminance": 0.40308
}

Semantic roles & 50–950 ramp

primary

#66BF31

secondary

#AF81CB

accent

#45E2A8

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66BF31

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

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