#66A421#66A421

#66A421 is a light, vivid yellow-green. Relative luminance 0.295; OKLCH L 65.2% C 0.169 H 132.4°. Best body text is #000000 at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#66A421
RGB	rgb(102, 164, 33)
HSL	hsl(88, 66%, 39%)
HSV	hsv(88, 80%, 64%)
CMYK	cmyk(37.8%, 0%, 79.9%, 35.7%)
CIE-LAB	lab(61.21, -40.29, 56.47)
CIE-LCH	lch(61.21, 69.37, 125.50°)
OKLab	oklab(65.21% -0.1139 0.1247)
OKLCH	oklch(65.21% 0.169 132.4)
XYZ	xyz(19.0292, 29.4847, 6.1270)
Luminance	0.2949 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A421 #5F21A4

analogous

#A4A021 #66A421 #24A421

triadic

#66A421 #2166A4 #A42166

tetradic

#66A421 #21A4A0 #5F21A4 #A42124

square

#66A421 #21A4A0 #5F21A4 #A42124

split-complementary

#66A421 #2124A4 #A021A4

monochromatic

#273E0C #467117 #66A421 #86D52D #A3DF60

Accessibility & contrast

On white

3.04

#66A421 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.90

#66A421 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A421

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A421	#FFFFFF	#000000	##000000
##66A421	1.00	3.04	6.90	6.90
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.90	21.00	1.00	1.00
##000000	6.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AB9700

Deuteranopia (green-blind)

#A39230

Tritanopia (blue-blind)

#679D8C

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #66a421;
/* rgb */ color: rgb(102, 164, 33);
/* oklch */ color: oklch(65.2% 0.169 132.4);

Tailwind

colors: {
  custom: {
    50: '#97bf68',
    500: '#66a421',
    950: '#000000',
  },
}

SCSS

$custom: #66a421;
$custom-light: #97bf68;
$custom-dark: #000000;

JSON

{
  "hex": "#66a421",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 33
  },
  "hsl": {
    "h": 88.397,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.65209,
    "c": 0.16892,
    "h": 132.4
  },
  "luminance": 0.29486
}

Semantic roles & 50–950 ramp

primary

#66A421

secondary

#8E5DC4

accent

#3EE98F

background

#F9FBF6

surface

#F2F7EB

border

#CCD0C6

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66A421

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

Preview Lab → · Contrast checker → · Palette generator →