66ffff #66FFFF

Web Safe Color

Copy-ready color values

HEX#66FFFF

RGBrgb(102, 255, 255)

HSLhsl(180, 100%, 70%)

HSVhsv(180, 60%, 100%)

CMYK approx.cmyk(60, 0, 0, 0)

Color value table

Format	Value	Copy
HEX	`#66FFFF`
RGB	`rgb(102, 255, 255)`
HSL	`hsl(180, 100%, 70%)`
HSV	`hsv(180, 60%, 100%)`
CMYK approx.	`cmyk(60, 0, 0, 0)`
CSS keyword	`66ffff`

Contrast and classification

LightLightness1.21:1Contrast with white17.31:1Contrast with blackGreen / TealColor family

Shade and tint preview

White 10%
#75FFFF

White 30%
#94FFFF

White 70%
#D1FFFF

White 90%
#F0FFFF

Black 10%
#5CE6E6

Black 30%
#47B3B3

Black 70%
#1F4D4D

Black 90%
#0A1A1A

Harmony palettes

Complementary

#990000

#B13D3D

Analogous

#78FFED

#66FFFF

Triadic

#FFFF66

#FF66FF

Split complementary

#AB2E2E

#7D0000

Using 66ffff

66ffff 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-66ffff: #66ffff;
}

.button-primary {
  background: var(--color-66ffff);
  color: #000000;
}

$66ffff: #66ffff;

// Tailwind arbitrary value
class="bg-[#66ffff] text-white"