#66AD23#66AD23

#66AD23 is a light, vivid yellow-green. Relative luminance 0.328; OKLCH L 67.5% C 0.179 H 133.8°. Best body text is #000000 at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#66AD23
RGB	rgb(102, 173, 35)
HSL	hsl(91, 66%, 41%)
HSV	hsv(91, 80%, 68%)
CMYK	cmyk(41%, 0%, 79.8%, 32.2%)
CIE-LAB	lab(64.02, -43.98, 58.49)
CIE-LCH	lch(64.02, 73.18, 126.94°)
OKLab	oklab(67.52% -0.1237 0.1293)
OKLCH	oklch(67.52% 0.179 133.8)
XYZ	xyz(20.7261, 32.8322, 6.8350)
Luminance	0.3283 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AD23 #6A23AD

analogous

#ABAD23 #66AD23 #23AD25

triadic

#66AD23 #2366AD #AD2366

tetradic

#66AD23 #23ABAD #6A23AD #AD2523

square

#66AD23 #23ABAD #6A23AD #AD2523

split-complementary

#66AD23 #2523AD #AD23AB

monochromatic

#2A470E #487A19 #66AD23 #84D637 #A3E16A

Accessibility & contrast

On white

2.78

#66AD23 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.57

#66AD23 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AD23

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AD23	#FFFFFF	#000000	##000000
##66AD23	1.00	2.78	7.57	7.57
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.57	21.00	1.00	1.00
##000000	7.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B49F00

Deuteranopia (green-blind)

#AB9933

Tritanopia (blue-blind)

#66A694

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #66ad23;
/* rgb */ color: rgb(102, 173, 35);
/* oklch */ color: oklch(67.5% 0.179 133.8);

Tailwind

colors: {
  custom: {
    50: '#98c66a',
    500: '#66ad23',
    950: '#000000',
  },
}

SCSS

$custom: #66ad23;
$custom-light: #98c66a;
$custom-dark: #000000;

JSON

{
  "hex": "#66ad23",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 35
  },
  "hsl": {
    "h": 90.87,
    "s": 66.346,
    "l": 40.784
  },
  "oklch": {
    "l": 0.67518,
    "c": 0.17895,
    "h": 133.8
  },
  "luminance": 0.32833
}

Semantic roles & 50–950 ramp

primary

#66AD23

secondary

#9765C7

accent

#3FE996

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #66AD23

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

Preview Lab → · Contrast checker → · Palette generator →