#66B41A#66B41A

#66B41A is a light, vivid yellow-green. Relative luminance 0.355; OKLCH L 69.3% C 0.191 H 134.1°. Best body text is #000000 at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#66B41A
RGB	rgb(102, 180, 26)
HSL	hsl(90, 75%, 40%)
HSV	hsv(90, 86%, 71%)
CMYK	cmyk(43.3%, 0%, 85.6%, 29.4%)
CIE-LAB	lab(66.17, -47.24, 62.79)
CIE-LCH	lch(66.17, 78.58, 126.95°)
OKLab	oklab(69.26% -0.133 0.137)
OKLCH	oklch(69.26% 0.191 134.1)
XYZ	xyz(21.9868, 35.5406, 6.6786)
Luminance	0.3554 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B41A #681AB4

analogous

#B3B41A #66B41A #1AB41B

triadic

#66B41A #1A66B4 #B41A66

tetradic

#66B41A #1AB3B4 #681AB4 #B41B1A

square

#66B41A #1AB3B4 #681AB4 #B41B1A

split-complementary

#66B41A #1B1AB4 #B41AB3

monochromatic

#29490B #487F12 #66B41A #84E02B #A3E860

Accessibility & contrast

On white

2.59

#66B41A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.11

#66B41A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B41A

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B41A	#FFFFFF	#000000	##000000
##66B41A	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)

#B19F2F

Tritanopia (blue-blind)

#65AD99

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66b41a;
/* rgb */ color: rgb(102, 180, 26);
/* oklch */ color: oklch(69.3% 0.191 134.1);

Tailwind

colors: {
  custom: {
    50: '#99cb68',
    500: '#66b41a',
    950: '#000000',
  },
}

SCSS

$custom: #66b41a;
$custom-light: #99cb68;
$custom-dark: #000000;

JSON

{
  "hex": "#66b41a",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 26
  },
  "hsl": {
    "h": 90.39,
    "s": 74.757,
    "l": 40.392
  },
  "oklch": {
    "l": 0.69263,
    "c": 0.19095,
    "h": 134.1
  },
  "luminance": 0.35542
}

Semantic roles & 50–950 ramp

primary

#66B41A

secondary

#965DCC

accent

#36F195

background

#F9FCF6

surface

#F2F8EB

border

#CCD1C6

text

#0F1307

muted

#7E827A

Preview Lab

Preview with #66B41A

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

Preview Lab → · Contrast checker → · Palette generator →