#66B41C#66B41C

#66B41C is a light, vivid yellow-green. Relative luminance 0.356; OKLCH L 69.3% C 0.190 H 134.2°. Best body text is #000000 at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#66B41C
RGB	rgb(102, 180, 28)
HSL	hsl(91, 73%, 41%)
HSV	hsv(91, 84%, 71%)
CMYK	cmyk(43.3%, 0%, 84.4%, 29.4%)
CIE-LAB	lab(66.17, -47.16, 62.33)
CIE-LCH	lch(66.17, 78.16, 127.11°)
OKLab	oklab(69.27% -0.1327 0.1363)
OKLCH	oklch(69.27% 0.19 134.2)
XYZ	xyz(22.0099, 35.5499, 6.8005)
Luminance	0.3555 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B41C #6A1CB4

analogous

#B2B41C #66B41C #1CB41E

triadic

#66B41C #1C66B4 #B41C66

tetradic

#66B41C #1CB2B4 #6A1CB4 #B41E1C

square

#66B41C #1CB2B4 #6A1CB4 #B41E1C

split-complementary

#66B41C #1E1CB4 #B41CB2

monochromatic

#2A4A0C #487F14 #66B41C #84DF2F #A3E764

Accessibility & contrast

On white

2.59

#66B41C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.11

#66B41C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B41C

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B41C	#FFFFFF	#000000	##000000
##66B41C	1.00	2.59	8.11	8.11
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.11	21.00	1.00	1.00
##000000	8.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA500

Deuteranopia (green-blind)

#B19F30

Tritanopia (blue-blind)

#65AD99

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66b41c;
/* rgb */ color: rgb(102, 180, 28);
/* oklch */ color: oklch(69.3% 0.190 134.2);

Tailwind

colors: {
  custom: {
    50: '#99cb68',
    500: '#66b41c',
    950: '#000000',
  },
}

SCSS

$custom: #66b41c;
$custom-light: #99cb68;
$custom-dark: #000000;

JSON

{
  "hex": "#66b41c",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 28
  },
  "hsl": {
    "h": 90.789,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.69271,
    "c": 0.19023,
    "h": 134.2
  },
  "luminance": 0.35551
}

Semantic roles & 50–950 ramp

primary

#66B41C

secondary

#9760CC

accent

#38F096

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0F1307

muted

#7E827A

Preview Lab

Preview with #66B41C

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

Preview Lab → · Contrast checker → · Palette generator →