#66AC23#66AC23

#66AC23 is a light, vivid yellow-green. Relative luminance 0.325; OKLCH L 67.3% C 0.178 H 133.6°. Best body text is #000000 at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#66AC23
RGB	rgb(102, 172, 35)
HSL	hsl(91, 66%, 41%)
HSV	hsv(91, 80%, 67%)
CMYK	cmyk(40.7%, 0%, 79.7%, 32.5%)
CIE-LAB	lab(63.71, -43.57, 58.20)
CIE-LCH	lch(63.71, 72.70, 126.82°)
OKLab	oklab(67.26% -0.1226 0.1287)
OKLCH	oklch(67.26% 0.178 133.6)
XYZ	xyz(20.5350, 32.4501, 6.7713)
Luminance	0.3245 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AC23 #6923AC

analogous

#AAAC23 #66AC23 #23AC24

triadic

#66AC23 #2366AC #AC2366

tetradic

#66AC23 #23AAAC #6923AC #AC2423

square

#66AC23 #23AAAC #6923AC #AC2423

split-complementary

#66AC23 #2423AC #AC23AA

monochromatic

#2A460E #487919 #66AC23 #84D636 #A3E069

Accessibility & contrast

On white

2.80

#66AC23 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.49

#66AC23 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AC23

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AC23	#FFFFFF	#000000	##000000
##66AC23	1.00	2.80	7.49	7.49
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.49	21.00	1.00	1.00
##000000	7.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B39E00

Deuteranopia (green-blind)

#AA9832

Tritanopia (blue-blind)

#66A593

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #66ac23;
/* rgb */ color: rgb(102, 172, 35);
/* oklch */ color: oklch(67.3% 0.178 133.6);

Tailwind

colors: {
  custom: {
    50: '#98c56a',
    500: '#66ac23',
    950: '#000000',
  },
}

SCSS

$custom: #66ac23;
$custom-light: #98c56a;
$custom-dark: #000000;

JSON

{
  "hex": "#66ac23",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 35
  },
  "hsl": {
    "h": 90.657,
    "s": 66.184,
    "l": 40.588
  },
  "oklch": {
    "l": 0.67263,
    "c": 0.17774,
    "h": 133.6
  },
  "luminance": 0.32451
}

Semantic roles & 50–950 ramp

primary

#66AC23

secondary

#9664C6

accent

#3FE996

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #66AC23

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

Preview Lab → · Contrast checker → · Palette generator →