What color is #666D99?

#666D99 is a grayish blue, closest to the named color Haunt Mist. It belongs to the blue family of colors.

What is the RGB value of #666D99?

The RGB value is 102, 109, 153: 102 red, 109 green and 153 blue on a 0 to 255 scale.

What is the complementary color of #666D99?

The complementary color is #999266, found by rotating the hue 180° on the color wheel.

Is black or white text better on #666D99?

White text. Black text has a contrast ratio of 4.21:1 and white text 4.99:1. WCAG asks for at least 4.5:1 for normal text.

#666D99 color

#666D99 rgb(102, 109, 153)

Shades of blue

The hex color #666D99 is a grayish blue.

In the RGB color model it is made of 40% red, 42.7% green and 60% blue (102, 109, 153).

Its hue angle is 232°, with 20% saturation and 50% lightness. For print, the CMYK equivalent is 33% cyan, 29% magenta, 0% yellow and 40% black.

The closest named color is Haunt Mist (#5F6D91), a difference of 3.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 4.99:1).

#666D99 color codes

HEX	`#666D99`
RGB	`rgb(102, 109, 153)`
RGB percent	`rgb(40%, 42.7%, 60%)`
HSL	`hsl(232, 20%, 50%)`
HSV / HSB	`hsv(232, 33%, 60%)`
CMYK	`cmyk(33%, 29%, 0%, 40%)`
CIE LAB	`lab(47.05, 8.24, -24.74)`
CIE LCH	`lch(47.05, 26.08, 288.41)`
CIE XYZ	`xyz(16.696, 16.061, 32.351)`
Decimal	`6712729`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #666D99, 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 #666D99	Ratio	AA	AAA	AA large
Sample text	4.21:1	Fail	Fail	Pass
Sample text	4.99:1	Pass	Fail	Pass

#666D99 as text on	Ratio	AA	AAA	AA large
Sample text	4.99:1	Pass	Fail	Pass
Sample text	4.21:1	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 #666D99 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #666d99; }
.text { color: #666d99; }
.border { border: 2px solid #666d99; }
.transparent { background-color: rgb(102 109 153 / 50%); }
.gradient { background: linear-gradient(to right, #666d99, #786699); }

Background

Text color

Border

Similar colors

Closest common color name: Slate Gray.

Questions

What color is #666D99?: #666D99 is a grayish blue, closest to the named color Haunt Mist. It belongs to the blue family of colors.
What is the RGB value of #666D99?: The RGB value is 102, 109, 153: 102 red, 109 green and 153 blue on a 0 to 255 scale.
What is the complementary color of #666D99?: The complementary color is #999266, found by rotating the hue 180° on the color wheel.
Is black or white text better on #666D99?: White text. Black text has a contrast ratio of 4.21:1 and white text 4.99:1. WCAG asks for at least 4.5:1 for normal text.