#66BB33#66BB33

#66BB33 is a light, vivid yellow-green. Relative luminance 0.386; OKLCH L 71.2% C 0.187 H 136.3°. Best body text is #000000 at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#66BB33
RGB	rgb(102, 187, 51)
HSL	hsl(98, 57%, 47%)
HSV	hsv(98, 73%, 73%)
CMYK	cmyk(45.5%, 0%, 72.7%, 26.7%)
CIE-LAB	lab(68.46, -48.71, 57.47)
CIE-LCH	lch(68.46, 75.33, 130.29°)
OKLab	oklab(71.19% -0.1354 0.1295)
OKLCH	oklch(71.19% 0.187 136.3)
XYZ	xyz(23.8467, 38.6030, 9.3259)
Luminance	0.3860 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BB33 #8833BB

analogous

#AABB33 #66BB33 #33BB44

triadic

#66BB33 #3366BB #BB3366

tetradic

#66BB33 #33AABB #8833BB #BB4433

square

#66BB33 #33AABB #8833BB #BB4433

split-complementary

#66BB33 #4433BB #BB33AA

monochromatic

#325B19 #4C8B26 #66BB33 #87D259 #AADF89

Accessibility & contrast

On white

2.41

#66BB33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.72

#66BB33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BB33

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BB33	#FFFFFF	#000000	##000000
##66BB33	1.00	2.41	8.72	8.72
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.72	21.00	1.00	1.00
##000000	8.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AB1A

Deuteranopia (green-blind)

#B6A440

Tritanopia (blue-blind)

#62B4A1

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66bb33;
/* rgb */ color: rgb(102, 187, 51);
/* oklch */ color: oklch(71.2% 0.187 136.3);

Tailwind

colors: {
  custom: {
    50: '#99d073',
    500: '#66bb33',
    950: '#000000',
  },
}

SCSS

$custom: #66bb33;
$custom-light: #99d073;
$custom-dark: #000000;

JSON

{
  "hex": "#66bb33",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 51
  },
  "hsl": {
    "h": 97.5,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.71186,
    "c": 0.18737,
    "h": 136.3
  },
  "luminance": 0.38604
}

Semantic roles & 50–950 ramp

primary

#66BB33

secondary

#AE81C9

accent

#47E0A7

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1409

muted

#7E827B

Preview Lab

Preview with #66BB33

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

Preview Lab → · Contrast checker → · Palette generator →