#66BD33#66BD33

#66BD33 is a light, vivid yellow-green. Relative luminance 0.395; OKLCH L 71.7% C 0.190 H 136.5°. Best body text is #000000 at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#66BD33
RGB	rgb(102, 189, 51)
HSL	hsl(98, 58%, 47%)
HSV	hsv(98, 73%, 74%)
CMYK	cmyk(46%, 0%, 73%, 25.9%)
CIE-LAB	lab(69.08, -49.50, 58.09)
CIE-LCH	lch(69.08, 76.32, 130.44°)
OKLab	oklab(71.69% -0.1376 0.1308)
OKLCH	oklch(71.69% 0.19 136.5)
XYZ	xyz(24.2740, 39.4574, 9.4683)
Luminance	0.3946 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BD33 #8A33BD

analogous

#ABBD33 #66BD33 #33BD45

triadic

#66BD33 #3366BD #BD3366

tetradic

#66BD33 #33ABBD #8A33BD #BD4533

square

#66BD33 #33ABBD #8A33BD #BD4533

split-complementary

#66BD33 #4533BD #BD33AB

monochromatic

#325D19 #4C8D26 #66BD33 #87D35B #AAE08B

Accessibility & contrast

On white

2.36

#66BD33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.89

#66BD33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BD33

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BD33	#FFFFFF	#000000	##000000
##66BD33	1.00	2.36	8.89	8.89
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.89	21.00	1.00	1.00
##000000	8.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4AD19

Deuteranopia (green-blind)

#B8A641

Tritanopia (blue-blind)

#62B6A2

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66bd33;
/* rgb */ color: rgb(102, 189, 51);
/* oklch */ color: oklch(71.7% 0.190 136.5);

Tailwind

colors: {
  custom: {
    50: '#99d174',
    500: '#66bd33',
    950: '#000000',
  },
}

SCSS

$custom: #66bd33;
$custom-light: #99d174;
$custom-dark: #000000;

JSON

{
  "hex": "#66bd33",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 51
  },
  "hsl": {
    "h": 97.826,
    "s": 57.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.71694,
    "c": 0.18983,
    "h": 136.5
  },
  "luminance": 0.39459
}

Semantic roles & 50–950 ramp

primary

#66BD33

secondary

#AF82CA

accent

#47E1A8

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1409

muted

#7E827B

Preview Lab

Preview with #66BD33

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

Preview Lab → · Contrast checker → · Palette generator →