What color is #66639B?

#66639B is a grayish blue, closest to the named color Wizard’s Potion. It belongs to the blue family of colors.

What is the RGB value of #66639B?

The RGB value is 102, 99, 155: 102 red, 99 green and 155 blue on a 0 to 255 scale.

What is the complementary color of #66639B?

The complementary color is #989B63, found by rotating the hue 180° on the color wheel.

Is black or white text better on #66639B?

White text. Black text has a contrast ratio of 3.82:1 and white text 5.49:1. WCAG asks for at least 4.5:1 for normal text.

#66639B color

#66639B rgb(102, 99, 155)

Shades of blue

The hex color #66639B is a grayish blue.

In the RGB color model it is made of 40% red, 38.8% green and 60.8% blue (102, 99, 155).

Its hue angle is 243°, with 22% saturation and 50% lightness. For print, the CMYK equivalent is 34% cyan, 36% magenta, 0% yellow and 39% black.

The closest named color is Wizard’s Potion (#5D6098), a difference of 2.2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.49:1).

#66639B color codes

HEX	`#66639B`
RGB	`rgb(102, 99, 155)`
RGB percent	`rgb(40%, 38.8%, 60.8%)`
HSL	`hsl(243, 22%, 50%)`
HSV / HSB	`hsv(243, 36%, 61%)`
CMYK	`cmyk(34%, 36%, 0%, 39%)`
CIE LAB	`lab(44.4, 14.92, -30.07)`
CIE LCH	`lch(44.4, 33.56, 296.39)`
CIE XYZ	`xyz(15.856, 14.115, 32.893)`
Decimal	`6710171`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #66639B, 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 #66639B	Ratio	AA	AAA	AA large
Sample text	3.82:1	Fail	Fail	Pass
Sample text	5.49:1	Pass	Fail	Pass

#66639B as text on	Ratio	AA	AAA	AA large
Sample text	5.49:1	Pass	Fail	Pass
Sample text	3.82:1	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 #66639B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #66639b; }
.text { color: #66639b; }
.border { border: 2px solid #66639b; }
.transparent { background-color: rgb(102 99 155 / 50%); }
.gradient { background: linear-gradient(to right, #66639b, #82639b); }

Background

Text color

Border

Similar colors

Closest common color name: Royal Purple.

Questions

What color is #66639B?: #66639B is a grayish blue, closest to the named color Wizard’s Potion. It belongs to the blue family of colors.
What is the RGB value of #66639B?: The RGB value is 102, 99, 155: 102 red, 99 green and 155 blue on a 0 to 255 scale.
What is the complementary color of #66639B?: The complementary color is #989B63, found by rotating the hue 180° on the color wheel.
Is black or white text better on #66639B?: White text. Black text has a contrast ratio of 3.82:1 and white text 5.49:1. WCAG asks for at least 4.5:1 for normal text.