#66B628#66B628

#66B628 is a light, vivid yellow-green. Relative luminance 0.364; OKLCH L 69.8% C 0.187 H 135.1°. Best body text is #000000 at 8.29:1 contrast (WCAG AA passes).

Color values

HEX#66B628
RGBrgb(102, 182, 40)
HSLhsl(94, 64%, 44%)
HSVhsv(94, 78%, 71%)
CMYKcmyk(44%, 0%, 78%, 28.6%)
CIE-LABlab(66.85, -47.39, 59.61)
CIE-LCHlch(66.85, 76.15, 128.49°)
OKLaboklab(69.84% -0.1326 0.1324)
OKLCHoklch(69.84% 0.187 135.1)
XYZxyz(22.5899, 36.4326, 7.8489)
Luminance0.3643 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B628 #7828B6
analogous
#ADB628 #66B628 #28B631
triadic
#66B628 #2866B6 #B62866
tetradic
#66B628 #28ADB6 #7828B6 #B63128
square
#66B628 #28ADB6 #7828B6 #B63128
split-complementary
#66B628 #3128B6 #B628AD
monochromatic
#2E5212 #4A841D #66B628 #84D645 #A5E177

Accessibility & contrast

On white

2.53
#66B628 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.29
#66B628 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B628
8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B628#FFFFFF#000000##000000
##66B6281.002.538.298.29
#FFFFFF2.531.0021.0021.00
#0000008.2921.001.001.00
##0000008.2921.001.001.00

Color blindness preview

Protanopia (red-blind)
#BDA700
Deuteranopia (green-blind)
#B2A038
Tritanopia (blue-blind)
#64AF9C
Achromatopsia (no color)
#A3A3A3

Design tokens & code

CSS
--color: #66b628;
/* rgb */ color: rgb(102, 182, 40);
/* oklch */ color: oklch(69.8% 0.187 135.1);
Tailwind
colors: {
  custom: {
    50: '#99cc6e',
    500: '#66b628',
    950: '#000000',
  },
}
SCSS
$custom: #66b628;
$custom-light: #99cc6e;
$custom-dark: #000000;
JSON
{
  "hex": "#66b628",
  "rgb": {
    "r": 102,
    "g": 182,
    "b": 40
  },
  "hsl": {
    "h": 93.803,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.69841,
    "c": 0.18737,
    "h": 135.1
  },
  "luminance": 0.36434
}

Semantic roles & 50–950 ramp

primary
#66B628
secondary
#A271C9
accent
#41E79E
background
#F9FCF6
surface
#F2F9EC
border
#CCD2C7
text
#0F1308
muted
#7E827B

Preview Lab

Preview with #66B628

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

Preview Lab → · Contrast checker → · Palette generator →

#66B628 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva