#66AA3C#66AA3C

#66AA3C is a light, vivid yellow-green. Relative luminance 0.319; OKLCH L 66.9% C 0.159 H 135.5°. Best body text is #000000 at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#66AA3C
RGB	rgb(102, 170, 60)
HSL	hsl(97, 48%, 45%)
HSV	hsv(97, 65%, 67%)
CMYK	cmyk(40%, 0%, 64.7%, 33.3%)
CIE-LAB	lab(63.26, -40.96, 48.44)
CIE-LCH	lch(63.26, 63.44, 130.22°)
OKLab	oklab(66.94% -0.1138 0.1117)
OKLCH	oklch(66.94% 0.159 135.5)
XYZ	xyz(20.6693, 31.8994, 9.3422)
Luminance	0.3190 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AA3C #803CAA

analogous

#9DAA3C #66AA3C #3CAA49

triadic

#66AA3C #3C66AA #AA3C66

tetradic

#66AA3C #3C9DAA #803CAA #AA493C

square

#66AA3C #3C9DAA #803CAA #AA493C

split-complementary

#66AA3C #493CAA #AA3C9D

monochromatic

#30501C #4B7D2C #66AA3C #85C65D #A7D68B

Accessibility & contrast

On white

2.85

#66AA3C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.38

#66AA3C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AA3C

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AA3C	#FFFFFF	#000000	##000000
##66AA3C	1.00	2.85	7.38	7.38
#FFFFFF	2.85	1.00	21.00	21.00
#000000	7.38	21.00	1.00	1.00
##000000	7.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B09D2E

Deuteranopia (green-blind)

#A79745

Tritanopia (blue-blind)

#64A493

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #66aa3c;
/* rgb */ color: rgb(102, 170, 60);
/* oklch */ color: oklch(66.9% 0.159 135.5);

Tailwind

colors: {
  custom: {
    50: '#96c477',
    500: '#66aa3c',
    950: '#000000',
  },
}

SCSS

$custom: #66aa3c;
$custom-light: #96c477;
$custom-dark: #000000;

JSON

{
  "hex": "#66aa3c",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 60
  },
  "hsl": {
    "h": 97.091,
    "s": 47.826,
    "l": 45.098
  },
  "oklch": {
    "l": 0.66945,
    "c": 0.15945,
    "h": 135.5
  },
  "luminance": 0.319
}

Semantic roles & 50–950 ramp

primary

#66AA3C

secondary

#A881C0

accent

#50D7A4

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1209

muted

#7E817B

Preview Lab

Preview with #66AA3C

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

Preview Lab → · Contrast checker → · Palette generator →