Web Safe Color

Copy-ready color values

HEX#666600
RGBrgb(102, 102, 0)
HSLhsl(60, 100%, 20%)
HSVhsv(60, 100%, 40%)
CMYK approx.cmyk(0, 0, 100, 60)

Color value table

FormatValueCopy
HEX#666600
RGBrgb(102, 102, 0)
HSLhsl(60, 100%, 20%)
HSVhsv(60, 100%, 40%)
CMYK approx.cmyk(0, 0, 100, 60)
CSS keyword666600

Contrast and classification

DarkLightness6.06:1Contrast with white3.47:1Contrast with blackRed / OrangeColor family

Shade and tint preview

White 10%
#75751A

White 30%
#94944D

White 70%
#D1D1B3

White 90%
#F0F0E6

Black 10%
#5C5C00

Black 30%
#474700

Black 70%
#1F1F00

Black 90%
#0A0A00

Harmony palettes

Complementary

#9999FF
#B1B1FF

Analogous

#66660C
#665A0C

Triadic

#660066
#006666

Split complementary

#ABABFF
#7D7DD1

Using 666600

666600 works best when it is chosen with contrast, surrounding colors, and interface state in mind. Use the HEX value for static CSS, RGB when you need channel-level control, and HSL when adjusting lightness or saturation for hover states. The CMYK value is an approximate screen-to-print conversion, so print workflows should still rely on calibrated design software or a printer profile.

CSS, SCSS, and Tailwind examples

:root {
  --color-666600: #666600;
}

.button-primary {
  background: var(--color-666600);
  color: #ffffff;
}

$666600: #666600;

// Tailwind arbitrary value
class="bg-[#666600] text-white"