What color is #66638D?

#66638D is a grayish blue, closest to the named color Heron. It belongs to the blue family of colors.

What is the RGB value of #66638D?

The RGB value is 102, 99, 141: 102 red, 99 green and 141 blue on a 0 to 255 scale.

What is the complementary color of #66638D?

The complementary color is #8A8D63, found by rotating the hue 180° on the color wheel.

Is black or white text better on #66638D?

White text. Black text has a contrast ratio of 3.73:1 and white text 5.62:1. WCAG asks for at least 4.5:1 for normal text.

#66638D color

#66638D rgb(102, 99, 141)

Shades of blue

The hex color #66638D is a grayish blue.

In the RGB color model it is made of 40% red, 38.8% green and 55.3% blue (102, 99, 141).

Its hue angle is 244°, with 18% saturation and 47% lightness. For print, the CMYK equivalent is 28% cyan, 30% magenta, 0% yellow and 45% black.

The closest named color is Heron (#6A6887), a difference of 3.7 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.62:1).

#66638D color codes

HEX	`#66638D`
RGB	`rgb(102, 99, 141)`
RGB percent	`rgb(40%, 38.8%, 55.3%)`
HSL	`hsl(244, 18%, 47%)`
HSV / HSB	`hsv(244, 30%, 55%)`
CMYK	`cmyk(28%, 30%, 0%, 45%)`
CIE LAB	`lab(43.76, 11.1, -22.71)`
CIE LCH	`lch(43.76, 25.28, 296.06)`
CIE XYZ	`xyz(14.748, 13.671, 27.056)`
Decimal	`6710157`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #66638D, 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 #66638D	Ratio	AA	AAA	AA large
Sample text	3.73:1	Fail	Fail	Pass
Sample text	5.62:1	Pass	Fail	Pass

#66638D as text on	Ratio	AA	AAA	AA large
Sample text	5.62:1	Pass	Fail	Pass
Sample text	3.73:1	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 #66638D looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #66638d; }
.text { color: #66638d; }
.border { border: 2px solid #66638d; }
.transparent { background-color: rgb(102 99 141 / 50%); }
.gradient { background: linear-gradient(to right, #66638d, #7b638d); }

Background

Text color

Border

Similar colors

Closest common color name: Royal Purple.

Questions

What color is #66638D?: #66638D is a grayish blue, closest to the named color Heron. It belongs to the blue family of colors.
What is the RGB value of #66638D?: The RGB value is 102, 99, 141: 102 red, 99 green and 141 blue on a 0 to 255 scale.
What is the complementary color of #66638D?: The complementary color is #8A8D63, found by rotating the hue 180° on the color wheel.
Is black or white text better on #66638D?: White text. Black text has a contrast ratio of 3.73:1 and white text 5.62:1. WCAG asks for at least 4.5:1 for normal text.