#66A228#66A228

#66A228 is a light, vivid yellow-green. Relative luminance 0.288; OKLCH L 64.7% C 0.163 H 132.6°. Best body text is #000000 at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#66A228
RGB	rgb(102, 162, 40)
HSL	hsl(90, 60%, 40%)
HSV	hsv(90, 75%, 64%)
CMYK	cmyk(37%, 0%, 75.3%, 36.5%)
CIE-LAB	lab(60.62, -39.03, 53.62)
CIE-LCH	lch(60.62, 66.32, 126.05°)
OKLab	oklab(64.74% -0.11 0.1198)
OKLCH	oklch(64.74% 0.163 132.6)
XYZ	xyz(18.7826, 28.8178, 6.5798)
Luminance	0.2882 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A228 #6428A2

analogous

#A2A128 #66A228 #29A228

triadic

#66A228 #2866A2 #A22866

tetradic

#66A228 #28A2A1 #6428A2 #A22829

square

#66A228 #28A2A1 #6428A2 #A22829

split-complementary

#66A228 #2829A2 #A128A2

monochromatic

#284010 #47711C #66A228 #85CE39 #A3DA6A

Accessibility & contrast

On white

3.10

#66A228 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.76

#66A228 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A228

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A228	#FFFFFF	#000000	##000000
##66A228	1.00	3.10	6.76	6.76
#FFFFFF	3.10	1.00	21.00	21.00
#000000	6.76	21.00	1.00	1.00
##000000	6.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9950E

Deuteranopia (green-blind)

#A19134

Tritanopia (blue-blind)

#679B8B

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #66a228;
/* rgb */ color: rgb(102, 162, 40);
/* oklch */ color: oklch(64.7% 0.163 132.6);

Tailwind

colors: {
  custom: {
    50: '#97be6b',
    500: '#66a228',
    950: '#000000',
  },
}

SCSS

$custom: #66a228;
$custom-light: #97be6b;
$custom-dark: #000000;

JSON

{
  "hex": "#66a228",
  "rgb": {
    "r": 102,
    "g": 162,
    "b": 40
  },
  "hsl": {
    "h": 89.508,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.64741,
    "c": 0.16269,
    "h": 132.6
  },
  "luminance": 0.28819
}

Semantic roles & 50–950 ramp

primary

#66A228

secondary

#9265C1

accent

#44E493

background

#F9FBF6

surface

#F2F7EC

border

#CCD0C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66A228

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

Preview Lab → · Contrast checker → · Palette generator →