What color is #3F506F?

#3F506F is a dark, desaturated azure, closest to the named color Naval Blue. It belongs to the blue family of colors.

What is the RGB value of #3F506F?

The RGB value is 63, 80, 111: 63 red, 80 green and 111 blue on a 0 to 255 scale.

What is the complementary color of #3F506F?

The complementary color is #6F5E3F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #3F506F?

White text. Black text has a contrast ratio of 2.59:1 and white text 8.11:1. WCAG asks for at least 4.5:1 for normal text.

#3F506F color

#3F506F rgb(63, 80, 111)

Shades of blue

The hex color #3F506F is a dark, desaturated azure.

In the RGB color model it is made of 24.7% red, 31.4% green and 43.5% blue (63, 80, 111).

Its hue angle is 219°, with 28% saturation and 34% lightness. For print, the CMYK equivalent is 43% cyan, 28% magenta, 0% yellow and 56% black.

The closest named color is Naval Blue (#384B6B), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 8.11:1).

#3F506F color codes

HEX	`#3F506F`
RGB	`rgb(63, 80, 111)`
RGB percent	`rgb(24.7%, 31.4%, 43.5%)`
HSL	`hsl(219, 28%, 34%)`
HSV / HSB	`hsv(219, 43%, 44%)`
CMYK	`cmyk(43%, 28%, 0%, 56%)`
CIE LAB	`lab(33.86, 2.24, -19.92)`
CIE LCH	`lch(33.86, 20.05, 276.43)`
CIE XYZ	`xyz(7.787, 7.941, 16.158)`
Decimal	`4149359`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #3F506F, 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 #3F506F	Ratio	AA	AAA	AA large
Sample text	2.59:1	Fail	Fail	Fail
Sample text	8.11:1	Pass	Pass	Pass

#3F506F as text on	Ratio	AA	AAA	AA large
Sample text	8.11:1	Pass	Pass	Pass
Sample text	2.59:1	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 #3F506F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #3f506f; }
.text { color: #3f506f; }
.border { border: 2px solid #3f506f; }
.transparent { background-color: rgb(63 80 111 / 50%); }
.gradient { background: linear-gradient(to right, #3f506f, #463f6f); }

Background

Text color

Border

Similar colors

Closest common color name: Charcoal.

Questions

What color is #3F506F?: #3F506F is a dark, desaturated azure, closest to the named color Naval Blue. It belongs to the blue family of colors.
What is the RGB value of #3F506F?: The RGB value is 63, 80, 111: 63 red, 80 green and 111 blue on a 0 to 255 scale.
What is the complementary color of #3F506F?: The complementary color is #6F5E3F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #3F506F?: White text. Black text has a contrast ratio of 2.59:1 and white text 8.11:1. WCAG asks for at least 4.5:1 for normal text.