#66B41D#66B41D

#66B41D is a light, vivid yellow-green. Relative luminance 0.356; OKLCH L 69.3% C 0.190 H 134.3°. Best body text is #000000 at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#66B41D
RGB	rgb(102, 180, 29)
HSL	hsl(91, 72%, 41%)
HSV	hsv(91, 84%, 71%)
CMYK	cmyk(43.3%, 0%, 83.9%, 29.4%)
CIE-LAB	lab(66.18, -47.12, 62.09)
CIE-LCH	lch(66.18, 77.94, 127.20°)
OKLab	oklab(69.27% -0.1325 0.136)
OKLCH	oklch(69.27% 0.19 134.3)
XYZ	xyz(22.0221, 35.5548, 6.8645)
Luminance	0.3556 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B41D #6B1DB4

analogous

#B1B41D #66B41D #1DB41F

triadic

#66B41D #1D66B4 #B41D66

tetradic

#66B41D #1DB1B4 #6B1DB4 #B41F1D

square

#66B41D #1DB1B4 #6B1DB4 #B41F1D

split-complementary

#66B41D #1F1DB4 #B41DB1

monochromatic

#2A4B0C #487F15 #66B41D #84DE30 #A4E665

Accessibility & contrast

On white

2.59

#66B41D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.11

#66B41D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B41D

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B41D	#FFFFFF	#000000	##000000
##66B41D	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: #66b41d;
/* rgb */ color: rgb(102, 180, 29);
/* oklch */ color: oklch(69.3% 0.190 134.3);

Tailwind

colors: {
  custom: {
    50: '#99cb69',
    500: '#66b41d',
    950: '#000000',
  },
}

SCSS

$custom: #66b41d;
$custom-light: #99cb69;
$custom-dark: #000000;

JSON

{
  "hex": "#66b41d",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 29
  },
  "hsl": {
    "h": 90.993,
    "s": 72.249,
    "l": 40.98
  },
  "oklch": {
    "l": 0.69275,
    "c": 0.18985,
    "h": 134.3
  },
  "luminance": 0.35556
}

Semantic roles & 50–950 ramp

primary

#66B41D

secondary

#9861CB

accent

#39EF97

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0F1307

muted

#7E827A

Preview Lab

Preview with #66B41D

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

Preview Lab → · Contrast checker → · Palette generator →