#66C033#66C033

#66C033 is a light, vivid yellow-green. Relative luminance 0.408; OKLCH L 72.5% C 0.193 H 136.7°. Best body text is #000000 at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#66C033
RGB	rgb(102, 192, 51)
HSL	hsl(98, 58%, 48%)
HSV	hsv(98, 73%, 75%)
CMYK	cmyk(46.9%, 0%, 73.4%, 24.7%)
CIE-LAB	lab(70.01, -50.68, 59.01)
CIE-LCH	lch(70.01, 77.79, 130.66°)
OKLab	oklab(72.46% -0.1408 0.1327)
OKLCH	oklch(72.46% 0.193 136.7)
XYZ	xyz(24.9260, 40.7614, 9.6856)
Luminance	0.4076 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C033 #8D33C0

analogous

#ACC033 #66C033 #33C046

triadic

#66C033 #3366C0 #C03366

tetradic

#66C033 #33ACC0 #8D33C0 #C04633

square

#66C033 #33ACC0 #8D33C0 #C04633

split-complementary

#66C033 #4633C0 #C033AC

monochromatic

#335F19 #4C9026 #66C033 #88D45C #ABE18D

Accessibility & contrast

On white

2.29

#66C033 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.15

#66C033 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C033

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C033	#FFFFFF	#000000	##000000
##66C033	1.00	2.29	9.15	9.15
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.15	21.00	1.00	1.00
##000000	9.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C7B018

Deuteranopia (green-blind)

#BBA841

Tritanopia (blue-blind)

#61B9A5

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #66c033;
/* rgb */ color: rgb(102, 192, 51);
/* oklch */ color: oklch(72.5% 0.193 136.7);

Tailwind

colors: {
  custom: {
    50: '#99d474',
    500: '#66c033',
    950: '#000000',
  },
}

SCSS

$custom: #66c033;
$custom-light: #99d474;
$custom-dark: #000000;

JSON

{
  "hex": "#66c033",
  "rgb": {
    "r": 102,
    "g": 192,
    "b": 51
  },
  "hsl": {
    "h": 98.298,
    "s": 58.025,
    "l": 47.647
  },
  "oklch": {
    "l": 0.72455,
    "c": 0.19347,
    "h": 136.7
  },
  "luminance": 0.40763
}

Semantic roles & 50–950 ramp

primary

#66C033

secondary

#B184CB

accent

#47E1A9

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66C033

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

Preview Lab → · Contrast checker → · Palette generator →