What color is #666378?

#666378 is a grayish blue, closest to the named color Smoky. It belongs to the gray family of colors.

What is the RGB value of #666378?

The RGB value is 102, 99, 120: 102 red, 99 green and 120 blue on a 0 to 255 scale.

What is the complementary color of #666378?

The complementary color is #757863, found by rotating the hue 180° on the color wheel.

Is black or white text better on #666378?

White text. Black text has a contrast ratio of 3.62:1 and white text 5.8:1. WCAG asks for at least 4.5:1 for normal text.

#666378 color

#666378 rgb(102, 99, 120)

Shades of gray

The hex color #666378 is a grayish blue.

In the RGB color model it is made of 40% red, 38.8% green and 47.1% blue (102, 99, 120).

Its hue angle is 249°, with 10% saturation and 43% lightness. For print, the CMYK equivalent is 15% cyan, 18% magenta, 0% yellow and 53% black.

The closest named color is Smoky (#605D6B), a difference of 3.8 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.8:1).

#666378 color codes

HEX	`#666378`
RGB	`rgb(102, 99, 120)`
RGB percent	`rgb(40%, 38.8%, 47.1%)`
HSL	`hsl(249, 10%, 43%)`
HSV / HSB	`hsv(249, 17%, 47%)`
CMYK	`cmyk(15%, 18%, 0%, 53%)`
CIE LAB	`lab(42.92, 5.82, -11.33)`
CIE LCH	`lch(42.92, 12.73, 297.18)`
CIE XYZ	`xyz(13.331, 13.104, 19.593)`
Decimal	`6710136`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #666378, 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 #666378	Ratio	AA	AAA	AA large
Sample text	3.62:1	Fail	Fail	Pass
Sample text	5.8:1	Pass	Fail	Pass

#666378 as text on	Ratio	AA	AAA	AA large
Sample text	5.8:1	Pass	Fail	Pass
Sample text	3.62:1	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 #666378 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #666378; }
.text { color: #666378; }
.border { border: 2px solid #666378; }
.transparent { background-color: rgb(102 99 120 / 50%); }
.gradient { background: linear-gradient(to right, #666378, #716378); }

Background

Text color

Border

Similar colors

Closest common color name: Space Gray.

Questions

What color is #666378?: #666378 is a grayish blue, closest to the named color Smoky. It belongs to the gray family of colors.
What is the RGB value of #666378?: The RGB value is 102, 99, 120: 102 red, 99 green and 120 blue on a 0 to 255 scale.
What is the complementary color of #666378?: The complementary color is #757863, found by rotating the hue 180° on the color wheel.
Is black or white text better on #666378?: White text. Black text has a contrast ratio of 3.62:1 and white text 5.8:1. WCAG asks for at least 4.5:1 for normal text.