#66AA28#66AA28

#66AA28 is a light, vivid yellow-green. Relative luminance 0.317; OKLCH L 66.8% C 0.173 H 133.7°. Best body text is #000000 at 7.35:1 contrast (WCAG AA passes).

Color values

HEX#66AA28
RGBrgb(102, 170, 40)
HSLhsl(91, 62%, 41%)
HSVhsv(91, 76%, 67%)
CMYKcmyk(40%, 0%, 76.5%, 33.3%)
CIE-LABlab(63.12, -42.45, 56.04)
CIE-LCHlch(63.12, 70.31, 127.15°)
OKLaboklab(66.78% -0.1193 0.1249)
OKLCHoklch(66.78% 0.173 133.7)
XYZxyz(20.2369, 31.7264, 7.0646)
Luminance0.3173 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66AA28 #6C28AA
analogous
#A7AA28 #66AA28 #28AA2B
triadic
#66AA28 #2866AA #AA2866
tetradic
#66AA28 #28A7AA #6C28AA #AA2B28
square
#66AA28 #28A7AA #6C28AA #AA2B28
split-complementary
#66AA28 #2B28AA #AA28A7
monochromatic
#2B4711 #48781C #66AA28 #84D23E #A4DD6F

Accessibility & contrast

On white

2.86
#66AA28 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.35
#66AA28 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AA28
7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66AA28#FFFFFF#000000##000000
##66AA281.002.867.357.35
#FFFFFF2.861.0021.0021.00
#0000007.3521.001.001.00
##0000007.3521.001.001.00

Color blindness preview

Protanopia (red-blind)
#B19C08
Deuteranopia (green-blind)
#A89736
Tritanopia (blue-blind)
#66A391
Achromatopsia (no color)
#999999

Design tokens & code

CSS
--color: #66aa28;
/* rgb */ color: rgb(102, 170, 40);
/* oklch */ color: oklch(66.8% 0.173 133.7);
Tailwind
colors: {
  custom: {
    50: '#97c46c',
    500: '#66aa28',
    950: '#000000',
  },
}
SCSS
$custom: #66aa28;
$custom-light: #97c46c;
$custom-dark: #000000;
JSON
{
  "hex": "#66aa28",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 40
  },
  "hsl": {
    "h": 91.385,
    "s": 61.905,
    "l": 41.176
  },
  "oklch": {
    "l": 0.66782,
    "c": 0.17272,
    "h": 133.7
  },
  "luminance": 0.31727
}

Semantic roles & 50–950 ramp

primary
#66AA28
secondary
#996AC4
accent
#43E598
background
#F9FCF6
surface
#F2F8EC
border
#CCD1C7
text
#0E1207
muted
#7E817A

Preview Lab

Preview with #66AA28

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

Preview Lab → · Contrast checker → · Palette generator →

#66AA28 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva