#66BE38#66BE38

#66BE38 is a light, vivid yellow-green. Relative luminance 0.399; OKLCH L 72.0% C 0.188 H 136.9°. Best body text is #000000 at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#66BE38
RGB	rgb(102, 190, 56)
HSL	hsl(99, 54%, 48%)
HSV	hsv(99, 71%, 75%)
CMYK	cmyk(46.3%, 0%, 70.5%, 25.5%)
CIE-LAB	lab(69.42, -49.54, 56.59)
CIE-LCH	lch(69.42, 75.21, 131.20°)
OKLab	oklab(71.99% -0.1373 0.1283)
OKLCH	oklch(71.99% 0.188 136.9)
XYZ	xyz(24.6060, 39.9356, 10.1524)
Luminance	0.3994 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BE38 #9038BE

analogous

#A9BE38 #66BE38 #38BE4D

triadic

#66BE38 #3866BE #BE3866

tetradic

#66BE38 #38A9BE #9038BE #BE4D38

square

#66BE38 #38A9BE #9038BE #BE4D38

split-complementary

#66BE38 #4D38BE #BE38A9

monochromatic

#335F1C #4D8F2A #66BE38 #88D162 #ACDF92

Accessibility & contrast

On white

2.34

#66BE38 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.99

#66BE38 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BE38

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BE38	#FFFFFF	#000000	##000000
##66BE38	1.00	2.34	8.99	8.99
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.99	21.00	1.00	1.00
##000000	8.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4AE22

Deuteranopia (green-blind)

#B9A745

Tritanopia (blue-blind)

#61B7A3

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66be38;
/* rgb */ color: rgb(102, 190, 56);
/* oklch */ color: oklch(72.0% 0.188 136.9);

Tailwind

colors: {
  custom: {
    50: '#99d276',
    500: '#66be38',
    950: '#000000',
  },
}

SCSS

$custom: #66be38;
$custom-light: #99d276;
$custom-dark: #000000;

JSON

{
  "hex": "#66be38",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 56
  },
  "hsl": {
    "h": 99.403,
    "s": 54.472,
    "l": 48.235
  },
  "oklch": {
    "l": 0.71985,
    "c": 0.18797,
    "h": 136.9
  },
  "luminance": 0.39937
}

Semantic roles & 50–950 ramp

primary

#66BE38

secondary

#B388CA

accent

#4ADEAB

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66BE38

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

Preview Lab → · Contrast checker → · Palette generator →