What color is #666C87?

#666C87 is a grayish blue, closest to the named color Dark Prince. It belongs to the blue family of colors.

What is the RGB value of #666C87?

The RGB value is 102, 108, 135: 102 red, 108 green and 135 blue on a 0 to 255 scale.

What is the complementary color of #666C87?

The complementary color is #878166, found by rotating the hue 180° on the color wheel.

Is black or white text better on #666C87?

White text. Black text has a contrast ratio of 4.06:1 and white text 5.17:1. WCAG asks for at least 4.5:1 for normal text.

#666C87 color

#666C87 rgb(102, 108, 135)

Shades of blue

The hex color #666C87 is a grayish blue.

In the RGB color model it is made of 40% red, 42.4% green and 52.9% blue (102, 108, 135).

Its hue angle is 229°, with 14% saturation and 46% lightness. For print, the CMYK equivalent is 24% cyan, 20% magenta, 0% yellow and 47% black.

The closest named color is Dark Prince (#6B6C89), a difference of 2.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.17:1).

#666C87 color codes

HEX	`#666C87`
RGB	`rgb(102, 108, 135)`
RGB percent	`rgb(40%, 42.4%, 52.9%)`
HSL	`hsl(229, 14%, 46%)`
HSV / HSB	`hsv(229, 24%, 53%)`
CMYK	`cmyk(24%, 20%, 0%, 47%)`
CIE LAB	`lab(46.04, 4.06, -15.61)`
CIE LCH	`lch(46.04, 16.13, 284.59)`
CIE XYZ	`xyz(15.214, 15.299, 25.068)`
Decimal	`6712455`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #666C87, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #666C87	Ratio	AA	AAA	AA large
Sample text	4.06:1	Fail	Fail	Pass
Sample text	5.17:1	Pass	Fail	Pass

#666C87 as text on	Ratio	AA	AAA	AA large
Sample text	5.17:1	Pass	Fail	Pass
Sample text	4.06:1	Fail	Fail	Pass

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #666C87 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #666c87; }
.text { color: #666c87; }
.border { border: 2px solid #666c87; }
.transparent { background-color: rgb(102 108 135 / 50%); }
.gradient { background: linear-gradient(to right, #666c87, #716687); }

Background

Text color

Border

Similar colors

Closest common color name: Space Gray.

Questions

What color is #666C87?: #666C87 is a grayish blue, closest to the named color Dark Prince. It belongs to the blue family of colors.
What is the RGB value of #666C87?: The RGB value is 102, 108, 135: 102 red, 108 green and 135 blue on a 0 to 255 scale.
What is the complementary color of #666C87?: The complementary color is #878166, found by rotating the hue 180° on the color wheel.
Is black or white text better on #666C87?: White text. Black text has a contrast ratio of 4.06:1 and white text 5.17:1. WCAG asks for at least 4.5:1 for normal text.