What color is #1F3C5F?

#1F3C5F is a dark, moderate azure, closest to the named color Nautilus. It belongs to the blue family of colors.

What is the RGB value of #1F3C5F?

The RGB value is 31, 60, 95: 31 red, 60 green and 95 blue on a 0 to 255 scale.

What is the complementary color of #1F3C5F?

The complementary color is #5F421F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1F3C5F?

White text. Black text has a contrast ratio of 1.87:1 and white text 11.23:1. WCAG asks for at least 4.5:1 for normal text.

#1F3C5F color

#1F3C5F rgb(31, 60, 95)

Shades of blue

The hex color #1F3C5F is a dark, moderate azure.

In the RGB color model it is made of 12.2% red, 23.5% green and 37.3% blue (31, 60, 95).

Its hue angle is 213°, with 51% saturation and 25% lightness. For print, the CMYK equivalent is 67% cyan, 37% magenta, 0% yellow and 63% black.

The closest named color is Nautilus (#273C5A), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 11.23:1).

#1F3C5F color codes

HEX	`#1F3C5F`
RGB	`rgb(31, 60, 95)`
RGB percent	`rgb(12.2%, 23.5%, 37.3%)`
HSL	`hsl(213, 51%, 25%)`
HSV / HSB	`hsv(213, 67%, 37%)`
CMYK	`cmyk(67%, 37%, 0%, 63%)`
CIE LAB	`lab(24.79, 1.58, -24.04)`
CIE LCH	`lch(24.79, 24.09, 273.76)`
CIE XYZ	`xyz(4.246, 4.349, 11.44)`
Decimal	`2047071`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1F3C5F, 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 #1F3C5F	Ratio	AA	AAA	AA large
Sample text	1.87:1	Fail	Fail	Fail
Sample text	11.23:1	Pass	Pass	Pass

#1F3C5F as text on	Ratio	AA	AAA	AA large
Sample text	11.23:1	Pass	Pass	Pass
Sample text	1.87:1	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 #1F3C5F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1f3c5f; }
.text { color: #1f3c5f; }
.border { border: 2px solid #1f3c5f; }
.transparent { background-color: rgb(31 60 95 / 50%); }
.gradient { background: linear-gradient(to right, #1f3c5f, #221f5f); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #1F3C5F?: #1F3C5F is a dark, moderate azure, closest to the named color Nautilus. It belongs to the blue family of colors.
What is the RGB value of #1F3C5F?: The RGB value is 31, 60, 95: 31 red, 60 green and 95 blue on a 0 to 255 scale.
What is the complementary color of #1F3C5F?: The complementary color is #5F421F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1F3C5F?: White text. Black text has a contrast ratio of 1.87:1 and white text 11.23:1. WCAG asks for at least 4.5:1 for normal text.