#66BE33#66BE33

#66BE33 is a light, vivid yellow-green. Relative luminance 0.399; OKLCH L 71.9% C 0.191 H 136.5°. Best body text is #000000 at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#66BE33
RGB	rgb(102, 190, 51)
HSL	hsl(98, 58%, 47%)
HSV	hsv(98, 73%, 75%)
CMYK	cmyk(46.3%, 0%, 73.2%, 25.5%)
CIE-LAB	lab(69.39, -49.90, 58.39)
CIE-LCH	lch(69.39, 76.81, 130.51°)
OKLab	oklab(71.95% -0.1387 0.1314)
OKLCH	oklch(71.95% 0.191 136.5)
XYZ	xyz(24.4898, 39.8891, 9.5403)
Luminance	0.3989 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BE33 #8B33BE

analogous

#ABBE33 #66BE33 #33BE46

triadic

#66BE33 #3366BE #BE3366

tetradic

#66BE33 #33ABBE #8B33BE #BE4633

square

#66BE33 #33ABBE #8B33BE #BE4633

split-complementary

#66BE33 #4633BE #BE33AB

monochromatic

#325E19 #4C8E26 #66BE33 #87D35B #AAE08B

Accessibility & contrast

On white

2.34

#66BE33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.98

#66BE33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BE33

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BE33	#FFFFFF	#000000	##000000
##66BE33	1.00	2.34	8.98	8.98
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.98	21.00	1.00	1.00
##000000	8.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C5AE19

Deuteranopia (green-blind)

#B9A741

Tritanopia (blue-blind)

#62B7A3

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66be33;
/* rgb */ color: rgb(102, 190, 51);
/* oklch */ color: oklch(71.9% 0.191 136.5);

Tailwind

colors: {
  custom: {
    50: '#99d274',
    500: '#66be33',
    950: '#000000',
  },
}

SCSS

$custom: #66be33;
$custom-light: #99d274;
$custom-dark: #000000;

JSON

{
  "hex": "#66be33",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 51
  },
  "hsl": {
    "h": 97.986,
    "s": 57.676,
    "l": 47.255
  },
  "oklch": {
    "l": 0.71948,
    "c": 0.19104,
    "h": 136.5
  },
  "luminance": 0.39891
}

Semantic roles & 50–950 ramp

primary

#66BE33

secondary

#B083CA

accent

#47E1A8

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66BE33

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

Preview Lab → · Contrast checker → · Palette generator →