#66A021#66A021

#66A021 is a light, vivid yellow-green. Relative luminance 0.281; OKLCH L 64.2% C 0.164 H 131.8°. Best body text is #000000 at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#66A021
RGB	rgb(102, 160, 33)
HSL	hsl(87, 66%, 38%)
HSV	hsv(87, 79%, 63%)
CMYK	cmyk(36.2%, 0%, 79.4%, 37.3%)
CIE-LAB	lab(59.96, -38.55, 55.31)
CIE-LCH	lch(59.96, 67.42, 124.88°)
OKLab	oklab(64.19% -0.1092 0.1223)
OKLCH	oklch(64.19% 0.164 131.8)
XYZ	xyz(18.3246, 28.0754, 5.8921)
Luminance	0.2808 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A021 #5B21A0

analogous

#A09B21 #66A021 #26A021

triadic

#66A021 #2166A0 #A02166

tetradic

#66A021 #21A09B #5B21A0 #A02126

square

#66A021 #21A09B #5B21A0 #A02126

split-complementary

#66A021 #2126A0 #9B21A0

monochromatic

#253B0C #466D17 #66A021 #86D32B #A3DE5E

Accessibility & contrast

On white

3.17

#66A021 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.62

#66A021 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A021

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A021	#FFFFFF	#000000	##000000
##66A021	1.00	3.17	6.62	6.62
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.62	21.00	1.00	1.00
##000000	6.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A79300

Deuteranopia (green-blind)

#9F8F2F

Tritanopia (blue-blind)

#689989

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #66a021;
/* rgb */ color: rgb(102, 160, 33);
/* oklch */ color: oklch(64.2% 0.164 131.8);

Tailwind

colors: {
  custom: {
    50: '#97bc67',
    500: '#66a021',
    950: '#000000',
  },
}

SCSS

$custom: #66a021;
$custom-light: #97bc67;
$custom-dark: #000000;

JSON

{
  "hex": "#66a021",
  "rgb": {
    "r": 102,
    "g": 160,
    "b": 33
  },
  "hsl": {
    "h": 87.402,
    "s": 65.803,
    "l": 37.843
  },
  "oklch": {
    "l": 0.64187,
    "c": 0.16398,
    "h": 131.8
  },
  "luminance": 0.28076
}

Semantic roles & 50–950 ramp

primary

#66A021

secondary

#8A5BC2

accent

#3FE98D

background

#F9FBF6

surface

#F2F6EB

border

#CCD0C6

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66A021

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

Preview Lab → · Contrast checker → · Palette generator →