What color is #003F9A?

#003F9A is a dark, vivid azure, closest to the named color Cobalt Blue. It belongs to the blue family of colors.

What is the RGB value of #003F9A?

The RGB value is 0, 63, 154: 0 red, 63 green and 154 blue on a 0 to 255 scale.

What is the complementary color of #003F9A?

The complementary color is #9A5B00, found by rotating the hue 180° on the color wheel.

Is black or white text better on #003F9A?

White text. Black text has a contrast ratio of 2.18:1 and white text 9.64:1. WCAG asks for at least 4.5:1 for normal text.

#003F9A color

#003F9A rgb(0, 63, 154)

Shades of blue

The hex color #003F9A is a dark, vivid azure.

In the RGB color model it is made of 0% red, 24.7% green and 60.4% blue (0, 63, 154).

Its hue angle is 215°, with 100% saturation and 30% lightness. For print, the CMYK equivalent is 100% cyan, 59% magenta, 0% yellow and 40% black.

The closest named color is Cobalt Blue (#0047AB), a difference of 3.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 9.64:1).

#003F9A color codes

HEX	`#003F9A`
RGB	`rgb(0, 63, 154)`
RGB percent	`rgb(0%, 24.7%, 60.4%)`
HSL	`hsl(215, 100%, 30%)`
HSV / HSB	`hsv(215, 100%, 60%)`
CMYK	`cmyk(100%, 59%, 0%, 40%)`
CIE LAB	`lab(29.13, 20.98, -54.19)`
CIE LCH	`lch(29.13, 58.11, 291.16)`
CIE XYZ	`xyz(7.608, 5.887, 31.301)`
Decimal	`16282`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #003F9A, 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 #003F9A	Ratio	AA	AAA	AA large
Sample text	2.18:1	Fail	Fail	Fail
Sample text	9.64:1	Pass	Pass	Pass

#003F9A as text on	Ratio	AA	AAA	AA large
Sample text	9.64:1	Pass	Pass	Pass
Sample text	2.18:1	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 #003F9A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #003f9a; }
.text { color: #003f9a; }
.border { border: 2px solid #003f9a; }
.transparent { background-color: rgb(0 63 154 / 50%); }
.gradient { background: linear-gradient(to right, #003f9a, #0e009a); }

Background

Text color

Border

Similar colors

Questions

What color is #003F9A?: #003F9A is a dark, vivid azure, closest to the named color Cobalt Blue. It belongs to the blue family of colors.
What is the RGB value of #003F9A?: The RGB value is 0, 63, 154: 0 red, 63 green and 154 blue on a 0 to 255 scale.
What is the complementary color of #003F9A?: The complementary color is #9A5B00, found by rotating the hue 180° on the color wheel.
Is black or white text better on #003F9A?: White text. Black text has a contrast ratio of 2.18:1 and white text 9.64:1. WCAG asks for at least 4.5:1 for normal text.