#66A431#66A431

#66A431 is a light, vivid yellow-green. Relative luminance 0.296; OKLCH L 65.3% C 0.160 H 133.6°. Best body text is #000000 at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#66A431
RGB	rgb(102, 164, 49)
HSL	hsl(92, 54%, 42%)
HSV	hsv(92, 70%, 64%)
CMYK	cmyk(37.8%, 0%, 70.1%, 35.7%)
CIE-LAB	lab(61.30, -39.28, 50.94)
CIE-LCH	lch(61.30, 64.32, 127.64°)
OKLab	oklab(65.32% -0.11 0.1155)
OKLCH	oklch(65.32% 0.16 133.6)
XYZ	xyz(19.3090, 29.5966, 7.6005)
Luminance	0.2960 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A431 #6F31A4

analogous

#A0A431 #66A431 #31A436

triadic

#66A431 #3166A4 #A43166

tetradic

#66A431 #31A0A4 #6F31A4 #A43631

square

#66A431 #31A0A4 #6F31A4 #A43631

split-complementary

#66A431 #3631A4 #A431A0

monochromatic

#2B4615 #497523 #66A431 #84C949 #A4D779

Accessibility & contrast

On white

3.03

#66A431 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.92

#66A431 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A431

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A431	#FFFFFF	#000000	##000000
##66A431	1.00	3.03	6.92	6.92
#FFFFFF	3.03	1.00	21.00	21.00
#000000	6.92	21.00	1.00	1.00
##000000	6.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AB971F

Deuteranopia (green-blind)

#A2923B

Tritanopia (blue-blind)

#669E8D

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #66a431;
/* rgb */ color: rgb(102, 164, 49);
/* oklch */ color: oklch(65.3% 0.160 133.6);

Tailwind

colors: {
  custom: {
    50: '#96bf70',
    500: '#66a431',
    950: '#000000',
  },
}

SCSS

$custom: #66a431;
$custom-light: #96bf70;
$custom-dark: #000000;

JSON

{
  "hex": "#66a431",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 49
  },
  "hsl": {
    "h": 92.348,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.65319,
    "c": 0.15955,
    "h": 133.6
  },
  "luminance": 0.29597
}

Semantic roles & 50–950 ramp

primary

#66A431

secondary

#9B72BF

accent

#4ADD9A

background

#F9FBF7

surface

#F2F7ED

border

#CCD0C8

text

#0E1208

muted

#7E817B

Preview Lab

Preview with #66A431

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

Preview Lab → · Contrast checker → · Palette generator →