#66B533#66B533

#66B533 is a light, vivid yellow-green. Relative luminance 0.361; OKLCH L 69.7% C 0.180 H 135.8°. Best body text is #000000 at 8.22:1 contrast (WCAG AA passes).

Color values

HEX#66B533
RGBrgb(102, 181, 51)
HSLhsl(96, 56%, 45%)
HSVhsv(96, 72%, 71%)
CMYKcmyk(43.6%, 0%, 71.8%, 29%)
CIE-LABlab(66.60, -46.29, 55.59)
CIE-LCHlch(66.60, 72.34, 129.78°)
OKLaboklab(69.66% -0.1289 0.1256)
OKLCHoklch(69.66% 0.18 135.8)
XYZxyz(22.6003, 36.1102, 8.9104)
Luminance0.3611 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B533 #8233B5
analogous
#A7B533 #66B533 #33B541
triadic
#66B533 #3366B5 #B53366
tetradic
#66B533 #33A7B5 #8233B5 #B54133
square
#66B533 #33A7B5 #8233B5 #B54133
split-complementary
#66B533 #4133B5 #B533A7
monochromatic
#305618 #4B8526 #66B533 #86CF56 #A8DD86

Accessibility & contrast

On white

2.55
#66B533 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.22
#66B533 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B533
8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B533#FFFFFF#000000##000000
##66B5331.002.558.228.22
#FFFFFF2.551.0021.0021.00
#0000008.2221.001.001.00
##0000008.2221.001.001.00

Color blindness preview

Protanopia (red-blind)
#BBA61D
Deuteranopia (green-blind)
#B1A03F
Tritanopia (blue-blind)
#63AE9C
Achromatopsia (no color)
#A2A2A2

Design tokens & code

CSS
--color: #66b533;
/* rgb */ color: rgb(102, 181, 51);
/* oklch */ color: oklch(69.7% 0.180 135.8);
Tailwind
colors: {
  custom: {
    50: '#98cc73',
    500: '#66b533',
    950: '#000000',
  },
}
SCSS
$custom: #66b533;
$custom-light: #98cc73;
$custom-dark: #000000;
JSON
{
  "hex": "#66b533",
  "rgb": {
    "r": 102,
    "g": 181,
    "b": 51
  },
  "hsl": {
    "h": 96.462,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.69661,
    "c": 0.17995,
    "h": 135.8
  },
  "luminance": 0.36112
}

Semantic roles & 50–950 ramp

primary
#66B533
secondary
#AA7DC6
accent
#48DFA4
background
#F9FCF7
surface
#F2F9ED
border
#CCD2C8
text
#0E1308
muted
#7E827B

Preview Lab

Preview with #66B533

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

Preview Lab → · Contrast checker → · Palette generator →

#66B533 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva