#66B321#66B321

#66B321 is a light, vivid yellow-green. Relative luminance 0.352; OKLCH L 69.0% C 0.187 H 134.3°. Best body text is #000000 at 8.04:1 contrast (WCAG AA passes).

Color values

HEX#66B321
RGBrgb(102, 179, 33)
HSLhsl(92, 69%, 42%)
HSVhsv(92, 82%, 70%)
CMYKcmyk(43%, 0%, 81.6%, 29.8%)
CIE-LABlab(65.88, -46.54, 60.77)
CIE-LCHlch(65.88, 76.55, 127.45°)
OKLaboklab(69.04% -0.1307 0.1338)
OKLCHoklch(69.04% 0.187 134.3)
XYZxyz(21.8737, 35.1736, 7.0752)
Luminance0.3518 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B321 #6E21B3
analogous
#AFB321 #66B321 #21B325
triadic
#66B321 #2166B3 #B32166
tetradic
#66B321 #21AFB3 #6E21B3 #B32521
square
#66B321 #21AFB3 #6E21B3 #B32521
split-complementary
#66B321 #2521B3 #B321AF
monochromatic
#2B4C0E #497F17 #66B321 #84DA37 #A4E46B

Accessibility & contrast

On white

2.61
#66B321 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.04
#66B321 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B321
8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B321#FFFFFF#000000##000000
##66B3211.002.618.048.04
#FFFFFF2.611.0021.0021.00
#0000008.0421.001.001.00
##0000008.0421.001.001.00

Color blindness preview

Protanopia (red-blind)
#BAA400
Deuteranopia (green-blind)
#B09E33
Tritanopia (blue-blind)
#65AC99
Achromatopsia (no color)
#A0A0A0

Design tokens & code

CSS
--color: #66b321;
/* rgb */ color: rgb(102, 179, 33);
/* oklch */ color: oklch(69.0% 0.187 134.3);
Tailwind
colors: {
  custom: {
    50: '#99ca6a',
    500: '#66b321',
    950: '#000000',
  },
}
SCSS
$custom: #66b321;
$custom-light: #99ca6a;
$custom-dark: #000000;
JSON
{
  "hex": "#66b321",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 33
  },
  "hsl": {
    "h": 91.644,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.69039,
    "c": 0.18705,
    "h": 134.3
  },
  "luminance": 0.35175
}

Semantic roles & 50–950 ramp

primary
#66B321
secondary
#9B66CA
accent
#3CEC99
background
#F9FCF6
surface
#F2F8EC
border
#CCD1C7
text
#0F1307
muted
#7E827A

Preview Lab

Preview with #66B321

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

Preview Lab → · Contrast checker → · Palette generator →

#66B321 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva