What color is #3F577D?

#3F577D is a dark, desaturated azure, closest to the named color Sailor. It belongs to the blue family of colors.

What is the RGB value of #3F577D?

The RGB value is 63, 87, 125: 63 red, 87 green and 125 blue on a 0 to 255 scale.

What is the complementary color of #3F577D?

The complementary color is #7D653F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #3F577D?

White text. Black text has a contrast ratio of 2.87:1 and white text 7.32:1. WCAG asks for at least 4.5:1 for normal text.

#3F577D color

#3F577D rgb(63, 87, 125)

Shades of blue

The hex color #3F577D is a dark, desaturated azure.

In the RGB color model it is made of 24.7% red, 34.1% green and 49% blue (63, 87, 125).

Its hue angle is 217°, with 33% saturation and 37% lightness. For print, the CMYK equivalent is 50% cyan, 30% magenta, 0% yellow and 51% black.

The closest named color is Sailor (#445780), a difference of 1.8 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 7.32:1).

#3F577D color codes

HEX	`#3F577D`
RGB	`rgb(63, 87, 125)`
RGB percent	`rgb(24.7%, 34.1%, 49%)`
HSL	`hsl(217, 33%, 37%)`
HSV / HSB	`hsv(217, 50%, 49%)`
CMYK	`cmyk(50%, 30%, 0%, 51%)`
CIE LAB	`lab(36.66, 2.26, -24.25)`
CIE LCH	`lch(36.66, 24.36, 275.33)`
CIE XYZ	`xyz(9.159, 9.353, 20.721)`
Decimal	`4151165`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #3F577D, 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 #3F577D	Ratio	AA	AAA	AA large
Sample text	2.87:1	Fail	Fail	Fail
Sample text	7.32:1	Pass	Pass	Pass

#3F577D as text on	Ratio	AA	AAA	AA large
Sample text	7.32:1	Pass	Pass	Pass
Sample text	2.87:1	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 #3F577D looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #3f577d; }
.text { color: #3f577d; }
.border { border: 2px solid #3f577d; }
.transparent { background-color: rgb(63 87 125 / 50%); }
.gradient { background: linear-gradient(to right, #3f577d, #463f7d); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Slate Blue.

Questions

What color is #3F577D?: #3F577D is a dark, desaturated azure, closest to the named color Sailor. It belongs to the blue family of colors.
What is the RGB value of #3F577D?: The RGB value is 63, 87, 125: 63 red, 87 green and 125 blue on a 0 to 255 scale.
What is the complementary color of #3F577D?: The complementary color is #7D653F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #3F577D?: White text. Black text has a contrast ratio of 2.87:1 and white text 7.32:1. WCAG asks for at least 4.5:1 for normal text.