#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
RGBrgb(102, 173, 35)
HSLhsl(91, 66%, 41%)
HSVhsv(91, 80%, 68%)
CMYKcmyk(41%, 0%, 79.8%, 32.2%)
CIE-LABlab(64.02, -43.98, 58.49)
CIE-LCHlch(64.02, 73.18, 126.94°)
OKLaboklab(67.52% -0.1237 0.1293)
OKLCHoklch(67.52% 0.179 133.8)
XYZxyz(20.7261, 32.8322, 6.8350)
Luminance0.3283 (WCAG relative)
Temperaturewarm
Familyyellow-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
##66AD231.002.787.577.57
#FFFFFF2.781.0021.0021.00
#0000007.5721.001.001.00
##0000007.5721.001.001.00

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 →

#66AD23 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva