#66B833#66B833

#66B833 is a light, vivid yellow-green. Relative luminance 0.373; OKLCH L 70.4% C 0.184 H 136.0°. Best body text is #000000 at 8.47:1 contrast (WCAG AA passes).

Color values

HEX#66B833
RGBrgb(102, 184, 51)
HSLhsl(97, 57%, 46%)
HSVhsv(97, 72%, 72%)
CMYKcmyk(44.6%, 0%, 72.3%, 27.8%)
CIE-LABlab(67.53, -47.51, 56.53)
CIE-LCHlch(67.53, 73.84, 130.04°)
OKLaboklab(70.42% -0.1322 0.1275)
OKLCHoklch(70.42% 0.184 136)
XYZxyz(23.2169, 37.3434, 9.1160)
Luminance0.3735 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B833 #8533B8
analogous
#A8B833 #66B833 #33B842
triadic
#66B833 #3366B8 #B83366
tetradic
#66B833 #33A8B8 #8533B8 #B84233
square
#66B833 #33A8B8 #8533B8 #B84233
split-complementary
#66B833 #4233B8 #B833A8
monochromatic
#315818 #4B8826 #66B833 #86D158 #A9DE88

Accessibility & contrast

On white

2.48
#66B833 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.47
#66B833 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B833
8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B833#FFFFFF#000000##000000
##66B8331.002.488.478.47
#FFFFFF2.481.0021.0021.00
#0000008.4721.001.001.00
##0000008.4721.001.001.00

Color blindness preview

Protanopia (red-blind)
#BFA91B
Deuteranopia (green-blind)
#B4A240
Tritanopia (blue-blind)
#63B19E
Achromatopsia (no color)
#A4A4A4

Design tokens & code

CSS
--color: #66b833;
/* rgb */ color: rgb(102, 184, 51);
/* oklch */ color: oklch(70.4% 0.184 136.0);
Tailwind
colors: {
  custom: {
    50: '#98ce73',
    500: '#66b833',
    950: '#000000',
  },
}
SCSS
$custom: #66b833;
$custom-light: #98ce73;
$custom-dark: #000000;
JSON
{
  "hex": "#66b833",
  "rgb": {
    "r": 102,
    "g": 184,
    "b": 51
  },
  "hsl": {
    "h": 96.992,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.70424,
    "c": 0.18367,
    "h": 136
  },
  "luminance": 0.37345
}

Semantic roles & 50–950 ramp

primary
#66B833
secondary
#AC7FC8
accent
#48E0A6
background
#F9FCF7
surface
#F2F9ED
border
#CCD2C8
text
#0E1309
muted
#7E827B

Preview Lab

Preview with #66B833

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

Preview Lab → · Contrast checker → · Palette generator →

#66B833 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva