Web Safe Color

Copy-ready color values

HEX#FFFF66
RGBrgb(255, 255, 102)
HSLhsl(60, 100%, 70%)
HSVhsv(60, 60%, 100%)
CMYK approx.cmyk(0, 0, 60, 0)

Color value table

FormatValueCopy
HEX#FFFF66
RGBrgb(255, 255, 102)
HSLhsl(60, 100%, 70%)
HSVhsv(60, 60%, 100%)
CMYK approx.cmyk(0, 0, 60, 0)
CSS keywordffff66

Contrast and classification

LightLightness1.06:1Contrast with white19.75:1Contrast with blackRed / OrangeColor family

Shade and tint preview

White 10%
#FFFF75

White 30%
#FFFF94

White 70%
#FFFFD1

White 90%
#FFFFF0

Black 10%
#E6E65C

Black 30%
#B3B347

Black 70%
#4D4D1F

Black 90%
#1A1A0A

Harmony palettes

Complementary

#000099
#3D3DB1

Analogous

#FFFF78
#FFED78

Triadic

#FF66FF
#66FFFF

Split complementary

#2E2EAB
#00007D

Using Ffff66

Ffff66 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-ffff66: #ffff66;
}

.button-primary {
  background: var(--color-ffff66);
  color: #000000;
}

$ffff66: #ffff66;

// Tailwind arbitrary value
class="bg-[#ffff66] text-white"