What color is #666691?

#666691 is a grayish blue, closest to the named color Heron. It belongs to the blue family of colors.

What is the RGB value of #666691?

The RGB value is 102, 102, 145: 102 red, 102 green and 145 blue on a 0 to 255 scale.

What is the complementary color of #666691?

The complementary color is #919166, found by rotating the hue 180° on the color wheel.

Is black or white text better on #666691?

White text. Black text has a contrast ratio of 3.87:1 and white text 5.42:1. WCAG asks for at least 4.5:1 for normal text.

#666691 color

#666691 rgb(102, 102, 145)

Shades of blue

The hex color #666691 is a grayish blue.

In the RGB color model it is made of 40% red, 40% green and 56.9% blue (102, 102, 145).

Its hue angle is 240°, with 17% saturation and 48% lightness. For print, the CMYK equivalent is 30% cyan, 30% magenta, 0% yellow and 43% black.

The closest named color is Heron (#6A6887), a difference of 3.8 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.42:1).

#666691 color codes

HEX	`#666691`
RGB	`rgb(102, 102, 145)`
RGB percent	`rgb(40%, 40%, 56.9%)`
HSL	`hsl(240, 17%, 48%)`
HSV / HSB	`hsv(240, 30%, 57%)`
CMYK	`cmyk(30%, 30%, 0%, 43%)`
CIE LAB	`lab(44.76, 10.33, -23.55)`
CIE LCH	`lch(44.76, 25.71, 293.69)`
CIE XYZ	`xyz(15.34, 14.371, 28.748)`
Decimal	`6710929`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #666691, 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 #666691	Ratio	AA	AAA	AA large
Sample text	3.87:1	Fail	Fail	Pass
Sample text	5.42:1	Pass	Fail	Pass

#666691 as text on	Ratio	AA	AAA	AA large
Sample text	5.42:1	Pass	Fail	Pass
Sample text	3.87:1	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 #666691 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #666691; }
.text { color: #666691; }
.border { border: 2px solid #666691; }
.transparent { background-color: rgb(102 102 145 / 50%); }
.gradient { background: linear-gradient(to right, #666691, #7c6691); }

Background

Text color

Border

Similar colors

Closest common color name: Royal Purple.

Questions

What color is #666691?: #666691 is a grayish blue, closest to the named color Heron. It belongs to the blue family of colors.
What is the RGB value of #666691?: The RGB value is 102, 102, 145: 102 red, 102 green and 145 blue on a 0 to 255 scale.
What is the complementary color of #666691?: The complementary color is #919166, found by rotating the hue 180° on the color wheel.
Is black or white text better on #666691?: White text. Black text has a contrast ratio of 3.87:1 and white text 5.42:1. WCAG asks for at least 4.5:1 for normal text.