What color is #665BBE?

#665BBE is a desaturated blue, closest to the named color Slate Blue. It belongs to the blue family of colors.

What is the RGB value of #665BBE?

The RGB value is 102, 91, 190: 102 red, 91 green and 190 blue on a 0 to 255 scale.

What is the complementary color of #665BBE?

The complementary color is #B3BE5B, found by rotating the hue 180° on the color wheel.

Is black or white text better on #665BBE?

White text. Black text has a contrast ratio of 3.8:1 and white text 5.52:1. WCAG asks for at least 4.5:1 for normal text.

#665BBE color

#665BBE rgb(102, 91, 190)

Shades of blue

The hex color #665BBE is a desaturated blue.

In the RGB color model it is made of 40% red, 35.7% green and 74.5% blue (102, 91, 190).

Its hue angle is 247°, with 43% saturation and 55% lightness. For print, the CMYK equivalent is 46% cyan, 52% magenta, 0% yellow and 25% black.

The closest named color is Slate Blue (#6A5ACD), a difference of 2.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.52:1).

#665BBE color codes

HEX	`#665BBE`
RGB	`rgb(102, 91, 190)`
RGB percent	`rgb(40%, 35.7%, 74.5%)`
HSL	`hsl(247, 43%, 55%)`
HSV / HSB	`hsv(247, 52%, 75%)`
CMYK	`cmyk(46%, 52%, 0%, 25%)`
CIE LAB	`lab(44.27, 30.06, -50.84)`
CIE LCH	`lch(44.27, 59.06, 300.59)`
CIE XYZ	`xyz(18.512, 14.024, 50.437)`
Decimal	`6708158`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #665BBE, 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 #665BBE	Ratio	AA	AAA	AA large
Sample text	3.8:1	Fail	Fail	Pass
Sample text	5.52:1	Pass	Fail	Pass

#665BBE as text on	Ratio	AA	AAA	AA large
Sample text	5.52:1	Pass	Fail	Pass
Sample text	3.8:1	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 #665BBE looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #665bbe; }
.text { color: #665bbe; }
.border { border: 2px solid #665bbe; }
.transparent { background-color: rgb(102 91 190 / 50%); }
.gradient { background: linear-gradient(to right, #665bbe, #975bbe); }

Background

Text color

Border

Similar colors

Questions

What color is #665BBE?: #665BBE is a desaturated blue, closest to the named color Slate Blue. It belongs to the blue family of colors.
What is the RGB value of #665BBE?: The RGB value is 102, 91, 190: 102 red, 91 green and 190 blue on a 0 to 255 scale.
What is the complementary color of #665BBE?: The complementary color is #B3BE5B, found by rotating the hue 180° on the color wheel.
Is black or white text better on #665BBE?: White text. Black text has a contrast ratio of 3.8:1 and white text 5.52:1. WCAG asks for at least 4.5:1 for normal text.