#66C333#66C333

#66C333 is a light, vivid yellow-green. Relative luminance 0.421; OKLCH L 73.2% C 0.197 H 136.9°. Best body text is #000000 at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#66C333
RGB	rgb(102, 195, 51)
HSL	hsl(99, 59%, 48%)
HSV	hsv(99, 74%, 76%)
CMYK	cmyk(47.7%, 0%, 73.8%, 23.5%)
CIE-LAB	lab(70.93, -51.85, 59.93)
CIE-LCH	lch(70.93, 79.25, 130.87°)
OKLab	oklab(73.22% -0.1439 0.1346)
OKLCH	oklch(73.22% 0.197 136.9)
XYZ	xyz(25.5914, 42.0923, 9.9074)
Luminance	0.4209 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C333 #9033C3

analogous

#AEC333 #66C333 #33C348

triadic

#66C333 #3366C3 #C33366

tetradic

#66C333 #33AEC3 #9033C3 #C34833

square

#66C333 #33AEC3 #9033C3 #C34833

split-complementary

#66C333 #4833C3 #C333AE

monochromatic

#33621A #4D9226 #66C333 #88D55E #ACE28F

Accessibility & contrast

On white

2.23

#66C333 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.42

#66C333 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C333

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C333	#FFFFFF	#000000	##000000
##66C333	1.00	2.23	9.42	9.42
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.42	21.00	1.00	1.00
##000000	9.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CAB216

Deuteranopia (green-blind)

#BDAB42

Tritanopia (blue-blind)

#61BCA7

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #66c333;
/* rgb */ color: rgb(102, 195, 51);
/* oklch */ color: oklch(73.2% 0.197 136.9);

Tailwind

colors: {
  custom: {
    50: '#9ad674',
    500: '#66c333',
    950: '#000000',
  },
}

SCSS

$custom: #66c333;
$custom-light: #9ad674;
$custom-dark: #000000;

JSON

{
  "hex": "#66c333",
  "rgb": {
    "r": 102,
    "g": 195,
    "b": 51
  },
  "hsl": {
    "h": 98.75,
    "s": 58.537,
    "l": 48.235
  },
  "oklch": {
    "l": 0.73216,
    "c": 0.19708,
    "h": 136.9
  },
  "luminance": 0.42094
}

Semantic roles & 50–950 ramp

primary

#66C333

secondary

#B386CC

accent

#46E2AB

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1409

muted

#7F837B

Preview Lab

Preview with #66C333

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

Preview Lab → · Contrast checker → · Palette generator →