#66A423#66A423

#66A423 is a light, vivid yellow-green. Relative luminance 0.295; OKLCH L 65.2% C 0.168 H 132.5°. Best body text is #000000 at 6.90:1 contrast (WCAG AA passes).

Color values

HEX#66A423
RGBrgb(102, 164, 35)
HSLhsl(89, 65%, 39%)
HSVhsv(89, 79%, 64%)
CMYKcmyk(37.8%, 0%, 78.7%, 35.7%)
CIE-LABlab(61.22, -40.18, 55.86)
CIE-LCHlch(61.22, 68.81, 125.73°)
OKLaboklab(65.22% -0.1135 0.1238)
OKLCHoklch(65.22% 0.168 132.5)
XYZxyz(19.0581, 29.4962, 6.2790)
Luminance0.2950 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66A423 #6123A4
analogous
#A4A223 #66A423 #26A423
triadic
#66A423 #2366A4 #A42366
tetradic
#66A423 #23A4A2 #6123A4 #A42326
square
#66A423 #23A4A2 #6123A4 #A42326
split-complementary
#66A423 #2326A4 #A223A4
monochromatic
#273F0D #477218 #66A423 #85D331 #A3DE64

Accessibility & contrast

On white

3.04
#66A423 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.90
#66A423 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A423
6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66A423#FFFFFF#000000##000000
##66A4231.003.046.906.90
#FFFFFF3.041.0021.0021.00
#0000006.9021.001.001.00
##0000006.9021.001.001.00

Color blindness preview

Protanopia (red-blind)
#AB9700
Deuteranopia (green-blind)
#A39231
Tritanopia (blue-blind)
#679D8C
Achromatopsia (no color)
#949494

Design tokens & code

CSS
--color: #66a423;
/* rgb */ color: rgb(102, 164, 35);
/* oklch */ color: oklch(65.2% 0.168 132.5);
Tailwind
colors: {
  custom: {
    50: '#97bf69',
    500: '#66a423',
    950: '#000000',
  },
}
SCSS
$custom: #66a423;
$custom-light: #97bf69;
$custom-dark: #000000;
JSON
{
  "hex": "#66a423",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 35
  },
  "hsl": {
    "h": 88.837,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.6522,
    "c": 0.16793,
    "h": 132.5
  },
  "luminance": 0.29497
}

Semantic roles & 50–950 ramp

primary
#66A423
secondary
#8F60C3
accent
#40E891
background
#F9FBF6
surface
#F2F7EB
border
#CCD0C6
text
#0E1207
muted
#7E817A

Preview Lab

Preview with #66A423

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

Preview Lab → · Contrast checker → · Palette generator →

#66A423 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva