What color is #666B78?

#666B78 is a grayish blue, closest to the named color Ashen Whisper. It belongs to the gray family of colors.

What is the RGB value of #666B78?

The RGB value is 102, 107, 120: 102 red, 107 green and 120 blue on a 0 to 255 scale.

What is the complementary color of #666B78?

The complementary color is #787366, found by rotating the hue 180° on the color wheel.

Is black or white text better on #666B78?

White text. Black text has a contrast ratio of 3.94:1 and white text 5.33:1. WCAG asks for at least 4.5:1 for normal text.

#666B78 color

#666B78 rgb(102, 107, 120)

Shades of gray

The hex color #666B78 is a grayish blue.

In the RGB color model it is made of 40% red, 42% green and 47.1% blue (102, 107, 120).

Its hue angle is 223°, with 8% saturation and 44% lightness. For print, the CMYK equivalent is 15% cyan, 11% magenta, 0% yellow and 53% black.

The closest named color is Ashen Whisper (#646B7A), a difference of 1.1 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.33:1).

#666B78 color codes

HEX	`#666B78`
RGB	`rgb(102, 107, 120)`
RGB percent	`rgb(40%, 42%, 47.1%)`
HSL	`hsl(223, 8%, 44%)`
HSV / HSB	`hsv(223, 15%, 47%)`
CMYK	`cmyk(15%, 11%, 0%, 53%)`
CIE LAB	`lab(45.22, 0.99, -7.88)`
CIE LCH	`lch(45.22, 7.94, 277.19)`
CIE XYZ	`xyz(14.127, 14.696, 19.858)`
Decimal	`6712184`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #666B78, 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 #666B78	Ratio	AA	AAA	AA large
Sample text	3.94:1	Fail	Fail	Pass
Sample text	5.33:1	Pass	Fail	Pass

#666B78 as text on	Ratio	AA	AAA	AA large
Sample text	5.33:1	Pass	Fail	Pass
Sample text	3.94:1	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 #666B78 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #666b78; }
.text { color: #666b78; }
.border { border: 2px solid #666b78; }
.transparent { background-color: rgb(102 107 120 / 50%); }
.gradient { background: linear-gradient(to right, #666b78, #6a6678); }

Background

Text color

Border

Similar colors

Questions

What color is #666B78?: #666B78 is a grayish blue, closest to the named color Ashen Whisper. It belongs to the gray family of colors.
What is the RGB value of #666B78?: The RGB value is 102, 107, 120: 102 red, 107 green and 120 blue on a 0 to 255 scale.
What is the complementary color of #666B78?: The complementary color is #787366, found by rotating the hue 180° on the color wheel.
Is black or white text better on #666B78?: White text. Black text has a contrast ratio of 3.94:1 and white text 5.33:1. WCAG asks for at least 4.5:1 for normal text.