What color is #3F4F71?

#3F4F71 is a dark, desaturated blue, closest to the named color Naval Blue. It belongs to the blue family of colors.

What is the RGB value of #3F4F71?

The RGB value is 63, 79, 113: 63 red, 79 green and 113 blue on a 0 to 255 scale.

What is the complementary color of #3F4F71?

The complementary color is #71613F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #3F4F71?

White text. Black text has a contrast ratio of 2.57:1 and white text 8.18:1. WCAG asks for at least 4.5:1 for normal text.

#3F4F71 color

#3F4F71 rgb(63, 79, 113)

Shades of blue

The hex color #3F4F71 is a dark, desaturated blue.

In the RGB color model it is made of 24.7% red, 31% green and 44.3% blue (63, 79, 113).

Its hue angle is 221°, with 28% saturation and 35% lightness. For print, the CMYK equivalent is 44% cyan, 30% magenta, 0% yellow and 56% black.

The closest named color is Naval Blue (#384B6B), a difference of 2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 8.18:1).

#3F4F71 color codes

HEX	`#3F4F71`
RGB	`rgb(63, 79, 113)`
RGB percent	`rgb(24.7%, 31%, 44.3%)`
HSL	`hsl(221, 28%, 35%)`
HSV / HSB	`hsv(221, 44%, 44%)`
CMYK	`cmyk(44%, 30%, 0%, 56%)`
CIE LAB	`lab(33.65, 3.52, -21.5)`
CIE LCH	`lch(33.65, 21.79, 279.29)`
CIE XYZ	`xyz(7.826, 7.841, 16.721)`
Decimal	`4149105`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #3F4F71, 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 #3F4F71	Ratio	AA	AAA	AA large
Sample text	2.57:1	Fail	Fail	Fail
Sample text	8.18:1	Pass	Pass	Pass

#3F4F71 as text on	Ratio	AA	AAA	AA large
Sample text	8.18:1	Pass	Pass	Pass
Sample text	2.57:1	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 #3F4F71 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #3f4f71; }
.text { color: #3f4f71; }
.border { border: 2px solid #3f4f71; }
.transparent { background-color: rgb(63 79 113 / 50%); }
.gradient { background: linear-gradient(to right, #3f4f71, #483f71); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Slate Blue.

Questions

What color is #3F4F71?: #3F4F71 is a dark, desaturated blue, closest to the named color Naval Blue. It belongs to the blue family of colors.
What is the RGB value of #3F4F71?: The RGB value is 63, 79, 113: 63 red, 79 green and 113 blue on a 0 to 255 scale.
What is the complementary color of #3F4F71?: The complementary color is #71613F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #3F4F71?: White text. Black text has a contrast ratio of 2.57:1 and white text 8.18:1. WCAG asks for at least 4.5:1 for normal text.