What color is #3F398B?

#3F398B is a desaturated blue, closest to the named color Dark Slate Blue. It belongs to the blue family of colors.

What is the RGB value of #3F398B?

The RGB value is 63, 57, 139: 63 red, 57 green and 139 blue on a 0 to 255 scale.

What is the complementary color of #3F398B?

The complementary color is #858B39, found by rotating the hue 180° on the color wheel.

Is black or white text better on #3F398B?

White text. Black text has a contrast ratio of 2.17:1 and white text 9.68:1. WCAG asks for at least 4.5:1 for normal text.

#3F398B color

#3F398B rgb(63, 57, 139)

Shades of blue

The hex color #3F398B is a desaturated blue.

In the RGB color model it is made of 24.7% red, 22.4% green and 54.5% blue (63, 57, 139).

Its hue angle is 244°, with 42% saturation and 38% lightness. For print, the CMYK equivalent is 55% cyan, 59% magenta, 0% yellow and 45% black.

The closest named color is Dark Slate Blue (#483D8B), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 9.68:1).

#3F398B color codes

HEX	`#3F398B`
RGB	`rgb(63, 57, 139)`
RGB percent	`rgb(24.7%, 22.4%, 54.5%)`
HSL	`hsl(244, 42%, 38%)`
HSV / HSB	`hsv(244, 59%, 55%)`
CMYK	`cmyk(55%, 59%, 0%, 45%)`
CIE LAB	`lab(29.02, 26.62, -45.04)`
CIE LCH	`lch(29.02, 52.32, 300.58)`
CIE XYZ	`xyz(8.172, 5.847, 25.119)`
Decimal	`4143499`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #3F398B, 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 #3F398B	Ratio	AA	AAA	AA large
Sample text	2.17:1	Fail	Fail	Fail
Sample text	9.68:1	Pass	Pass	Pass

#3F398B as text on	Ratio	AA	AAA	AA large
Sample text	9.68:1	Pass	Pass	Pass
Sample text	2.17:1	Fail	Fail	Fail

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 #3F398B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #3f398b; }
.text { color: #3f398b; }
.border { border: 2px solid #3f398b; }
.transparent { background-color: rgb(63 57 139 / 50%); }
.gradient { background: linear-gradient(to right, #3f398b, #68398b); }

Background

Text color

Border

Similar colors

Questions

What color is #3F398B?: #3F398B is a desaturated blue, closest to the named color Dark Slate Blue. It belongs to the blue family of colors.
What is the RGB value of #3F398B?: The RGB value is 63, 57, 139: 63 red, 57 green and 139 blue on a 0 to 255 scale.
What is the complementary color of #3F398B?: The complementary color is #858B39, found by rotating the hue 180° on the color wheel.
Is black or white text better on #3F398B?: White text. Black text has a contrast ratio of 2.17:1 and white text 9.68:1. WCAG asks for at least 4.5:1 for normal text.