#66B73C#66B73C

#66B73C is a light, vivid yellow-green. Relative luminance 0.370; OKLCH L 70.2% C 0.176 H 136.8°. Best body text is #000000 at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#66B73C
RGB	rgb(102, 183, 60)
HSL	hsl(100, 51%, 48%)
HSV	hsv(100, 67%, 72%)
CMYK	cmyk(44.3%, 0%, 67.2%, 28.2%)
CIE-LAB	lab(67.29, -46.40, 52.78)
CIE-LCH	lch(67.29, 70.28, 131.32°)
OKLab	oklab(70.24% -0.1286 0.1209)
OKLCH	oklch(70.24% 0.176 136.8)
XYZ	xyz(23.2279, 37.0166, 10.1951)
Luminance	0.3702 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B73C #8D3CB7

analogous

#A3B73C #66B73C #3CB74F

triadic

#66B73C #3C66B7 #B73C66

tetradic

#66B73C #3CA3B7 #8D3CB7 #B74F3C

square

#66B73C #3CA3B7 #8D3CB7 #B74F3C

split-complementary

#66B73C #4F3CB7 #B73CA3

monochromatic

#335B1E #4C892D #66B73C #88CC64 #ABDB92

Accessibility & contrast

On white

2.50

#66B73C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.40

#66B73C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B73C

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B73C	#FFFFFF	#000000	##000000
##66B73C	1.00	2.50	8.40	8.40
#FFFFFF	2.50	1.00	21.00	21.00
#000000	8.40	21.00	1.00	1.00
##000000	8.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDA82B

Deuteranopia (green-blind)

#B2A147

Tritanopia (blue-blind)

#62B19E

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66b73c;
/* rgb */ color: rgb(102, 183, 60);
/* oklch */ color: oklch(70.2% 0.176 136.8);

Tailwind

colors: {
  custom: {
    50: '#98cd78',
    500: '#66b73c',
    950: '#000000',
  },
}

SCSS

$custom: #66b73c;
$custom-light: #98cd78;
$custom-dark: #000000;

JSON

{
  "hex": "#66b73c",
  "rgb": {
    "r": 102,
    "g": 183,
    "b": 60
  },
  "hsl": {
    "h": 99.512,
    "s": 50.617,
    "l": 47.647
  },
  "oklch": {
    "l": 0.70244,
    "c": 0.17647,
    "h": 136.8
  },
  "luminance": 0.37018
}

Semantic roles & 50–950 ramp

primary

#66B73C

secondary

#B188C6

accent

#4EDAAA

background

#F9FCF7

surface

#F2F9EE

border

#CCD2C9

text

#0E1309

muted

#7E827B

Preview Lab

Preview with #66B73C

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

Preview Lab → · Contrast checker → · Palette generator →