#66BD36#66BD36

#66BD36 is a light, vivid yellow-green. Relative luminance 0.395; OKLCH L 71.7% C 0.188 H 136.7°. Best body text is #000000 at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#66BD36
RGB	rgb(102, 189, 54)
HSL	hsl(99, 56%, 48%)
HSV	hsv(99, 71%, 74%)
CMYK	cmyk(46%, 0%, 71.4%, 25.9%)
CIE-LAB	lab(69.10, -49.29, 57.01)
CIE-LCH	lch(69.10, 75.36, 130.85°)
OKLab	oklab(71.72% -0.1368 0.1289)
OKLCH	oklch(71.72% 0.188 136.7)
XYZ	xyz(24.3422, 39.4848, 9.8280)
Luminance	0.3949 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BD36 #8D36BD

analogous

#A9BD36 #66BD36 #36BD4A

triadic

#66BD36 #3666BD #BD3666

tetradic

#66BD36 #36A9BD #8D36BD #BD4A36

square

#66BD36 #36A9BD #8D36BD #BD4A36

split-complementary

#66BD36 #4A36BD #BD36A9

monochromatic

#335E1B #4C8D28 #66BD36 #88D15F #ABDF8F

Accessibility & contrast

On white

2.36

#66BD36 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.90

#66BD36 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BD36

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BD36	#FFFFFF	#000000	##000000
##66BD36	1.00	2.36	8.90	8.90
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.90	21.00	1.00	1.00
##000000	8.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3AD1F

Deuteranopia (green-blind)

#B8A643

Tritanopia (blue-blind)

#62B6A2

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66bd36;
/* rgb */ color: rgb(102, 189, 54);
/* oklch */ color: oklch(71.7% 0.188 136.7);

Tailwind

colors: {
  custom: {
    50: '#99d175',
    500: '#66bd36',
    950: '#000000',
  },
}

SCSS

$custom: #66bd36;
$custom-light: #99d175;
$custom-dark: #000000;

JSON

{
  "hex": "#66bd36",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 54
  },
  "hsl": {
    "h": 98.667,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.71716,
    "c": 0.188,
    "h": 136.7
  },
  "luminance": 0.39486
}

Semantic roles & 50–950 ramp

primary

#66BD36

secondary

#B185C9

accent

#49DFAA

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1409

muted

#7E827B

Preview Lab

Preview with #66BD36

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

Preview Lab → · Contrast checker → · Palette generator →