What color is #178B89?

#178B89 is a dark, moderate cyan, closest to the named color Dark Cyan. It belongs to the teal family of colors.

What is the RGB value of #178B89?

The RGB value is 23, 139, 137: 23 red, 139 green and 137 blue on a 0 to 255 scale.

What is the complementary color of #178B89?

The complementary color is #8B1719, found by rotating the hue 180° on the color wheel.

Is black or white text better on #178B89?

Black text. Black text has a contrast ratio of 5.09:1 and white text 4.13:1. WCAG asks for at least 4.5:1 for normal text.

#178B89 color

#178B89 rgb(23, 139, 137)

Shades of teal

The hex color #178B89 is a dark, moderate cyan.

In the RGB color model it is made of 9% red, 54.5% green and 53.7% blue (23, 139, 137).

Its hue angle is 179°, with 72% saturation and 32% lightness. For print, the CMYK equivalent is 83% cyan, 0% magenta, 1% yellow and 45% black.

The closest named color is Dark Cyan (#008B8B), a difference of 0.9 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 5.09:1).

#178B89 color codes

HEX	`#178B89`
RGB	`rgb(23, 139, 137)`
RGB percent	`rgb(9%, 54.5%, 53.7%)`
HSL	`hsl(179, 72%, 32%)`
HSV / HSB	`hsv(179, 83%, 55%)`
CMYK	`cmyk(83%, 0%, 1%, 45%)`
CIE LAB	`lab(52.34, -29.91, -7.61)`
CIE LCH	`lch(52.34, 30.86, 194.27)`
CIE XYZ	`xyz(14.099, 20.452, 26.867)`
Decimal	`1543049`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #178B89, 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 #178B89	Ratio	AA	AAA	AA large
Sample text	5.09:1	Pass	Fail	Pass
Sample text	4.13:1	Fail	Fail	Pass

#178B89 as text on	Ratio	AA	AAA	AA large
Sample text	4.13:1	Fail	Fail	Pass
Sample text	5.09:1	Pass	Fail	Pass

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 #178B89 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #178b89; }
.text { color: #178b89; }
.border { border: 2px solid #178b89; }
.transparent { background-color: rgb(23 139 137 / 50%); }
.gradient { background: linear-gradient(to right, #178b89, #17538b); }

Background

Text color

Border

Similar colors

Questions

What color is #178B89?: #178B89 is a dark, moderate cyan, closest to the named color Dark Cyan. It belongs to the teal family of colors.
What is the RGB value of #178B89?: The RGB value is 23, 139, 137: 23 red, 139 green and 137 blue on a 0 to 255 scale.
What is the complementary color of #178B89?: The complementary color is #8B1719, found by rotating the hue 180° on the color wheel.
Is black or white text better on #178B89?: Black text. Black text has a contrast ratio of 5.09:1 and white text 4.13:1. WCAG asks for at least 4.5:1 for normal text.