What color is #133D5B?

#133D5B is a dark, moderate azure, closest to the named color Poseidon. It belongs to the blue family of colors.

What is the RGB value of #133D5B?

The RGB value is 19, 61, 91: 19 red, 61 green and 91 blue on a 0 to 255 scale.

What is the complementary color of #133D5B?

The complementary color is #5B3113, found by rotating the hue 180° on the color wheel.

Is black or white text better on #133D5B?

White text. Black text has a contrast ratio of 1.85:1 and white text 11.37:1. WCAG asks for at least 4.5:1 for normal text.

#133D5B color

#133D5B rgb(19, 61, 91)

Shades of blue

The hex color #133D5B is a dark, moderate azure.

In the RGB color model it is made of 7.5% red, 23.9% green and 35.7% blue (19, 61, 91).

Its hue angle is 205°, with 65% saturation and 22% lightness. For print, the CMYK equivalent is 79% cyan, 33% magenta, 0% yellow and 64% black.

The closest named color is Poseidon (#143C5D), a difference of 1.5 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 11.37:1).

#133D5B color codes

HEX	`#133D5B`
RGB	`rgb(19, 61, 91)`
RGB percent	`rgb(7.5%, 23.9%, 35.7%)`
HSL	`hsl(205, 65%, 22%)`
HSV / HSB	`hsv(205, 79%, 36%)`
CMYK	`cmyk(79%, 33%, 0%, 64%)`
CIE LAB	`lab(24.42, -2.88, -22.06)`
CIE LCH	`lch(24.42, 22.24, 262.55)`
CIE XYZ	`xyz(3.825, 4.231, 10.511)`
Decimal	`1260891`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #133D5B, 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 #133D5B	Ratio	AA	AAA	AA large
Sample text	1.85:1	Fail	Fail	Fail
Sample text	11.37:1	Pass	Pass	Pass

#133D5B as text on	Ratio	AA	AAA	AA large
Sample text	11.37:1	Pass	Pass	Pass
Sample text	1.85:1	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 #133D5B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #133d5b; }
.text { color: #133d5b; }
.border { border: 2px solid #133d5b; }
.transparent { background-color: rgb(19 61 91 / 50%); }
.gradient { background: linear-gradient(to right, #133d5b, #13195b); }

Background

Text color

Border

Similar colors

Questions

What color is #133D5B?: #133D5B is a dark, moderate azure, closest to the named color Poseidon. It belongs to the blue family of colors.
What is the RGB value of #133D5B?: The RGB value is 19, 61, 91: 19 red, 61 green and 91 blue on a 0 to 255 scale.
What is the complementary color of #133D5B?: The complementary color is #5B3113, found by rotating the hue 180° on the color wheel.
Is black or white text better on #133D5B?: White text. Black text has a contrast ratio of 1.85:1 and white text 11.37:1. WCAG asks for at least 4.5:1 for normal text.