What color is #646A9E?

#646A9E is a grayish blue, closest to the named color Twinkle Night. It belongs to the blue family of colors.

What is the RGB value of #646A9E?

The RGB value is 100, 106, 158: 100 red, 106 green and 158 blue on a 0 to 255 scale.

What is the complementary color of #646A9E?

The complementary color is #9E9864, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646A9E?

White text. Black text has a contrast ratio of 4.1:1 and white text 5.13:1. WCAG asks for at least 4.5:1 for normal text.

#646A9E color

#646A9E rgb(100, 106, 158)

Shades of blue

The hex color #646A9E is a grayish blue.

In the RGB color model it is made of 39.2% red, 41.6% green and 62% blue (100, 106, 158).

Its hue angle is 234°, with 23% saturation and 51% lightness. For print, the CMYK equivalent is 37% cyan, 33% magenta, 0% yellow and 38% black.

The closest named color is Twinkle Night (#636CA8), a difference of 2.2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.13:1).

#646A9E color codes

HEX	`#646A9E`
RGB	`rgb(100, 106, 158)`
RGB percent	`rgb(39.2%, 41.6%, 62%)`
HSL	`hsl(234, 23%, 51%)`
HSV / HSB	`hsv(234, 37%, 62%)`
CMYK	`cmyk(37%, 33%, 0%, 38%)`
CIE LAB	`lab(46.29, 10.87, -28.89)`
CIE LCH	`lch(46.29, 30.87, 290.62)`
CIE XYZ	`xyz(16.579, 15.485, 34.457)`
Decimal	`6580894`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646A9E, 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 #646A9E	Ratio	AA	AAA	AA large
Sample text	4.1:1	Fail	Fail	Pass
Sample text	5.13:1	Pass	Fail	Pass

#646A9E as text on	Ratio	AA	AAA	AA large
Sample text	5.13:1	Pass	Fail	Pass
Sample text	4.1:1	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 #646A9E looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646a9e; }
.text { color: #646a9e; }
.border { border: 2px solid #646a9e; }
.transparent { background-color: rgb(100 106 158 / 50%); }
.gradient { background: linear-gradient(to right, #646a9e, #7b649e); }

Background

Text color

Border

Similar colors

Closest common color name: Royal Purple.

Questions

What color is #646A9E?: #646A9E is a grayish blue, closest to the named color Twinkle Night. It belongs to the blue family of colors.
What is the RGB value of #646A9E?: The RGB value is 100, 106, 158: 100 red, 106 green and 158 blue on a 0 to 255 scale.
What is the complementary color of #646A9E?: The complementary color is #9E9864, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646A9E?: White text. Black text has a contrast ratio of 4.1:1 and white text 5.13:1. WCAG asks for at least 4.5:1 for normal text.