#66B529#66B529

#66B529 is a light, vivid yellow-green. Relative luminance 0.360; OKLCH L 69.6% C 0.186 H 135.0°. Best body text is #000000 at 8.21:1 contrast (WCAG AA passes).

Color values

HEX#66B529
RGBrgb(102, 181, 41)
HSLhsl(94, 63%, 44%)
HSVhsv(94, 77%, 71%)
CMYKcmyk(43.6%, 0%, 77.3%, 29%)
CIE-LABlab(66.54, -46.93, 59.00)
CIE-LCHlch(66.54, 75.39, 128.50°)
OKLaboklab(69.59% -0.1313 0.1312)
OKLCHoklch(69.59% 0.186 135)
XYZxyz(22.4031, 36.0313, 7.8717)
Luminance0.3603 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B529 #7829B5
analogous
#ACB529 #66B529 #29B532
triadic
#66B529 #2966B5 #B52966
tetradic
#66B529 #29ACB5 #7829B5 #B53229
square
#66B529 #29ACB5 #7829B5 #B53229
split-complementary
#66B529 #3229B5 #B529AC
monochromatic
#2E5112 #4A831E #66B529 #84D546 #A5E078

Accessibility & contrast

On white

2.56
#66B529 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.21
#66B529 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B529
8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B529#FFFFFF#000000##000000
##66B5291.002.568.218.21
#FFFFFF2.561.0021.0021.00
#0000008.2121.001.001.00
##0000008.2121.001.001.00

Color blindness preview

Protanopia (red-blind)
#BCA602
Deuteranopia (green-blind)
#B19F38
Tritanopia (blue-blind)
#64AE9B
Achromatopsia (no color)
#A2A2A2

Design tokens & code

CSS
--color: #66b529;
/* rgb */ color: rgb(102, 181, 41);
/* oklch */ color: oklch(69.6% 0.186 135.0);
Tailwind
colors: {
  custom: {
    50: '#98cc6e',
    500: '#66b529',
    950: '#000000',
  },
}
SCSS
$custom: #66b529;
$custom-light: #98cc6e;
$custom-dark: #000000;
JSON
{
  "hex": "#66b529",
  "rgb": {
    "r": 102,
    "g": 181,
    "b": 41
  },
  "hsl": {
    "h": 93.857,
    "s": 63.063,
    "l": 43.529
  },
  "oklch": {
    "l": 0.69593,
    "c": 0.18566,
    "h": 135
  },
  "luminance": 0.36033
}

Semantic roles & 50–950 ramp

primary
#66B529
secondary
#A272C8
accent
#42E69E
background
#F9FCF7
surface
#F2F9ED
border
#CCD2C8
text
#0E1308
muted
#7E827B

Preview Lab

Preview with #66B529

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

Preview Lab → · Contrast checker → · Palette generator →

#66B529 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva