What color is #647BA1?

#647BA1 is a grayish azure, closest to the named color Misty Harbour. It belongs to the blue family of colors.

What is the RGB value of #647BA1?

The RGB value is 100, 123, 161: 100 red, 123 green and 161 blue on a 0 to 255 scale.

What is the complementary color of #647BA1?

The complementary color is #A18A64, found by rotating the hue 180° on the color wheel.

Is black or white text better on #647BA1?

Black text. Black text has a contrast ratio of 4.89:1 and white text 4.29:1. WCAG asks for at least 4.5:1 for normal text.

#647BA1 color

#647BA1 rgb(100, 123, 161)

Shades of blue

The hex color #647BA1 is a grayish azure.

In the RGB color model it is made of 39.2% red, 48.2% green and 63.1% blue (100, 123, 161).

Its hue angle is 217°, with 24% saturation and 51% lightness. For print, the CMYK equivalent is 38% cyan, 24% magenta, 0% yellow and 37% black.

The closest named color is Misty Harbour (#65769A), a difference of 2.5 ΔE, a small difference.

Black text is the more readable choice on this background (contrast 4.89:1).

#647BA1 color codes

HEX	`#647BA1`
RGB	`rgb(100, 123, 161)`
RGB percent	`rgb(39.2%, 48.2%, 63.1%)`
HSL	`hsl(217, 24%, 51%)`
HSV / HSB	`hsv(217, 38%, 63%)`
CMYK	`cmyk(38%, 24%, 0%, 37%)`
CIE LAB	`lab(51.21, 1.48, -23.03)`
CIE LCH	`lch(51.21, 23.08, 273.68)`
CIE XYZ	`xyz(18.77, 19.448, 36.476)`
Decimal	`6585249`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #647BA1, 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 #647BA1	Ratio	AA	AAA	AA large
Sample text	4.89:1	Pass	Fail	Pass
Sample text	4.29:1	Fail	Fail	Pass

#647BA1 as text on	Ratio	AA	AAA	AA large
Sample text	4.29:1	Fail	Fail	Pass
Sample text	4.89:1	Pass	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 #647BA1 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #647ba1; }
.text { color: #647ba1; }
.border { border: 2px solid #647ba1; }
.transparent { background-color: rgb(100 123 161 / 50%); }
.gradient { background: linear-gradient(to right, #647ba1, #6b64a1); }

Background

Text color

Border

Similar colors

Closest common color name: Slate Gray.

Questions

What color is #647BA1?: #647BA1 is a grayish azure, closest to the named color Misty Harbour. It belongs to the blue family of colors.
What is the RGB value of #647BA1?: The RGB value is 100, 123, 161: 100 red, 123 green and 161 blue on a 0 to 255 scale.
What is the complementary color of #647BA1?: The complementary color is #A18A64, found by rotating the hue 180° on the color wheel.
Is black or white text better on #647BA1?: Black text. Black text has a contrast ratio of 4.89:1 and white text 4.29:1. WCAG asks for at least 4.5:1 for normal text.