What color is #1F3747?

#1F3747 is a dark, desaturated azure, closest to the named color Blue Whale. It belongs to the blue family of colors.

What is the RGB value of #1F3747?

The RGB value is 31, 55, 71: 31 red, 55 green and 71 blue on a 0 to 255 scale.

What is the complementary color of #1F3747?

The complementary color is #472F1F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1F3747?

White text. Black text has a contrast ratio of 1.7:1 and white text 12.38:1. WCAG asks for at least 4.5:1 for normal text.

#1F3747 color

#1F3747 rgb(31, 55, 71)

Shades of blue

The hex color #1F3747 is a dark, desaturated azure.

In the RGB color model it is made of 12.2% red, 21.6% green and 27.8% blue (31, 55, 71).

Its hue angle is 204°, with 39% saturation and 20% lightness. For print, the CMYK equivalent is 56% cyan, 23% magenta, 0% yellow and 72% black.

The closest named color is Blue Whale (#1E3442), a difference of 1.3 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 12.38:1).

#1F3747 color codes

HEX	`#1F3747`
RGB	`rgb(31, 55, 71)`
RGB percent	`rgb(12.2%, 21.6%, 27.8%)`
HSL	`hsl(204, 39%, 20%)`
HSV / HSB	`hsv(204, 56%, 28%)`
CMYK	`cmyk(56%, 23%, 0%, 72%)`
CIE LAB	`lab(21.87, -4.01, -12.76)`
CIE LCH	`lch(21.87, 13.37, 252.54)`
CIE XYZ	`xyz(3.068, 3.478, 6.47)`
Decimal	`2045767`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1F3747, 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 #1F3747	Ratio	AA	AAA	AA large
Sample text	1.7:1	Fail	Fail	Fail
Sample text	12.38:1	Pass	Pass	Pass

#1F3747 as text on	Ratio	AA	AAA	AA large
Sample text	12.38:1	Pass	Pass	Pass
Sample text	1.7:1	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 #1F3747 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1f3747; }
.text { color: #1f3747; }
.border { border: 2px solid #1f3747; }
.transparent { background-color: rgb(31 55 71 / 50%); }
.gradient { background: linear-gradient(to right, #1f3747, #1f2347); }

Background

Text color

Border

Similar colors

Closest common color name: Charcoal.

Questions

What color is #1F3747?: #1F3747 is a dark, desaturated azure, closest to the named color Blue Whale. It belongs to the blue family of colors.
What is the RGB value of #1F3747?: The RGB value is 31, 55, 71: 31 red, 55 green and 71 blue on a 0 to 255 scale.
What is the complementary color of #1F3747?: The complementary color is #472F1F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1F3747?: White text. Black text has a contrast ratio of 1.7:1 and white text 12.38:1. WCAG asks for at least 4.5:1 for normal text.