What color is #173B3F?

#173B3F is a very dark, desaturated cyan, closest to the named color Sunken Harbour. It belongs to the teal family of colors.

What is the RGB value of #173B3F?

The RGB value is 23, 59, 63: 23 red, 59 green and 63 blue on a 0 to 255 scale.

What is the complementary color of #173B3F?

The complementary color is #3F1B17, found by rotating the hue 180° on the color wheel.

Is black or white text better on #173B3F?

White text. Black text has a contrast ratio of 1.73:1 and white text 12.11:1. WCAG asks for at least 4.5:1 for normal text.

#173B3F color

#173B3F rgb(23, 59, 63)

Shades of teal

The hex color #173B3F is a very dark, desaturated cyan.

In the RGB color model it is made of 9% red, 23.1% green and 24.7% blue (23, 59, 63).

Its hue angle is 186°, with 47% saturation and 17% lightness. For print, the CMYK equivalent is 63% cyan, 6% magenta, 0% yellow and 75% black.

The closest named color is Sunken Harbour (#1C3D44), a difference of 2.3 ΔE, a small difference.

White text is the more readable choice on this background (contrast 12.11:1).

#173B3F color codes

HEX	`#173B3F`
RGB	`rgb(23, 59, 63)`
RGB percent	`rgb(9%, 23.1%, 24.7%)`
HSL	`hsl(186, 47%, 17%)`
HSV / HSB	`hsv(186, 63%, 25%)`
CMYK	`cmyk(63%, 6%, 0%, 75%)`
CIE LAB	`lab(22.54, -11.46, -6.39)`
CIE LCH	`lch(22.54, 13.12, 209.15)`
CIE XYZ	`xyz(2.814, 3.669, 5.261)`
Decimal	`1522495`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #173B3F, 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 #173B3F	Ratio	AA	AAA	AA large
Sample text	1.73:1	Fail	Fail	Fail
Sample text	12.11:1	Pass	Pass	Pass

#173B3F as text on	Ratio	AA	AAA	AA large
Sample text	12.11:1	Pass	Pass	Pass
Sample text	1.73:1	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 #173B3F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #173b3f; }
.text { color: #173b3f; }
.border { border: 2px solid #173b3f; }
.transparent { background-color: rgb(23 59 63 / 50%); }
.gradient { background: linear-gradient(to right, #173b3f, #17273f); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Slate Gray.

Questions

What color is #173B3F?: #173B3F is a very dark, desaturated cyan, closest to the named color Sunken Harbour. It belongs to the teal family of colors.
What is the RGB value of #173B3F?: The RGB value is 23, 59, 63: 23 red, 59 green and 63 blue on a 0 to 255 scale.
What is the complementary color of #173B3F?: The complementary color is #3F1B17, found by rotating the hue 180° on the color wheel.
Is black or white text better on #173B3F?: White text. Black text has a contrast ratio of 1.73:1 and white text 12.11:1. WCAG asks for at least 4.5:1 for normal text.