What color is #666583?

#666583 is a grayish blue, closest to the named color Heron. It belongs to the blue family of colors.

What is the RGB value of #666583?

The RGB value is 102, 101, 131: 102 red, 101 green and 131 blue on a 0 to 255 scale.

What is the complementary color of #666583?

The complementary color is #828365, found by rotating the hue 180° on the color wheel.

Is black or white text better on #666583?

White text. Black text has a contrast ratio of 3.75:1 and white text 5.59:1. WCAG asks for at least 4.5:1 for normal text.

#666583 color

#666583 rgb(102, 101, 131)

Shades of blue

The hex color #666583 is a grayish blue.

In the RGB color model it is made of 40% red, 39.6% green and 51.4% blue (102, 101, 131).

Its hue angle is 242°, with 13% saturation and 45% lightness. For print, the CMYK equivalent is 22% cyan, 23% magenta, 0% yellow and 49% black.

The closest named color is Heron (#6A6887), a difference of 1.3 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.59:1).

#666583 color codes

HEX	`#666583`
RGB	`rgb(102, 101, 131)`
RGB percent	`rgb(40%, 39.6%, 51.4%)`
HSL	`hsl(242, 13%, 45%)`
HSV / HSB	`hsv(242, 23%, 51%)`
CMYK	`cmyk(22%, 23%, 0%, 49%)`
CIE LAB	`lab(43.9, 7.29, -16.48)`
CIE LCH	`lch(43.9, 18.02, 293.87)`
CIE XYZ	`xyz(14.229, 13.771, 23.377)`
Decimal	`6710659`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #666583, 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 #666583	Ratio	AA	AAA	AA large
Sample text	3.75:1	Fail	Fail	Pass
Sample text	5.59:1	Pass	Fail	Pass

#666583 as text on	Ratio	AA	AAA	AA large
Sample text	5.59:1	Pass	Fail	Pass
Sample text	3.75:1	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 #666583 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #666583; }
.text { color: #666583; }
.border { border: 2px solid #666583; }
.transparent { background-color: rgb(102 101 131 / 50%); }
.gradient { background: linear-gradient(to right, #666583, #756583); }

Background

Text color

Border

Similar colors

Closest common color name: Space Gray.

Questions

What color is #666583?: #666583 is a grayish blue, closest to the named color Heron. It belongs to the blue family of colors.
What is the RGB value of #666583?: The RGB value is 102, 101, 131: 102 red, 101 green and 131 blue on a 0 to 255 scale.
What is the complementary color of #666583?: The complementary color is #828365, found by rotating the hue 180° on the color wheel.
Is black or white text better on #666583?: White text. Black text has a contrast ratio of 3.75:1 and white text 5.59:1. WCAG asks for at least 4.5:1 for normal text.