#66A328#66A328

#66A328 is a light, vivid yellow-green. Relative luminance 0.292; OKLCH L 65.0% C 0.164 H 132.7°. Best body text is #000000 at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#66A328
RGB	rgb(102, 163, 40)
HSL	hsl(90, 61%, 40%)
HSV	hsv(90, 75%, 64%)
CMYK	cmyk(37.4%, 0%, 75.5%, 36.1%)
CIE-LAB	lab(60.93, -39.46, 53.92)
CIE-LCH	lch(60.93, 66.82, 126.20°)
OKLab	oklab(65% -0.1112 0.1205)
OKLCH	oklch(65% 0.164 132.7)
XYZ	xyz(18.9594, 29.1715, 6.6388)
Luminance	0.2917 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A328 #6528A3

analogous

#A3A228 #66A328 #29A328

triadic

#66A328 #2866A3 #A32866

tetradic

#66A328 #28A3A2 #6528A3 #A32829

square

#66A328 #28A3A2 #6528A3 #A32829

split-complementary

#66A328 #2829A3 #A228A3

monochromatic

#284110 #47721C #66A328 #85CF3A #A3DB6B

Accessibility & contrast

On white

3.07

#66A328 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.83

#66A328 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A328

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A328	#FFFFFF	#000000	##000000
##66A328	1.00	3.07	6.83	6.83
#FFFFFF	3.07	1.00	21.00	21.00
#000000	6.83	21.00	1.00	1.00
##000000	6.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AA960D

Deuteranopia (green-blind)

#A29134

Tritanopia (blue-blind)

#679C8C

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #66a328;
/* rgb */ color: rgb(102, 163, 40);
/* oklch */ color: oklch(65.0% 0.164 132.7);

Tailwind

colors: {
  custom: {
    50: '#97be6b',
    500: '#66a328',
    950: '#000000',
  },
}

SCSS

$custom: #66a328;
$custom-light: #97be6b;
$custom-dark: #000000;

JSON

{
  "hex": "#66a328",
  "rgb": {
    "r": 102,
    "g": 163,
    "b": 40
  },
  "hsl": {
    "h": 89.756,
    "s": 60.591,
    "l": 39.804
  },
  "oklch": {
    "l": 0.64996,
    "c": 0.16395,
    "h": 132.7
  },
  "luminance": 0.29172
}

Semantic roles & 50–950 ramp

primary

#66A328

secondary

#9366C1

accent

#44E493

background

#F9FBF6

surface

#F2F7EC

border

#CCD0C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66A328

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

Preview Lab → · Contrast checker → · Palette generator →