What color is #2188FF?

#2188FF is a vivid azure known as Pool Water. It belongs to the blue family of colors.

What is the RGB value of Pool Water?

The RGB value is 33, 136, 255: 33 red, 136 green and 255 blue on a 0 to 255 scale.

What is the complementary color of Pool Water?

The complementary color is #FF9821, found by rotating the hue 180° on the color wheel.

Is black or white text better on #2188FF?

Black text. Black text has a contrast ratio of 6.03:1 and white text 3.48:1. WCAG asks for at least 4.5:1 for normal text.

Pool Water color: hex code #2188FF

#2188FF rgb(33, 136, 255)

Shades of blue

Pool Water has the hex code #2188FF. It is a vivid azure.

In the RGB color model it is made of 12.9% red, 53.3% green and 100% blue (33, 136, 255).

Its hue angle is 212°, with 100% saturation and 56% lightness. For print, the CMYK equivalent is 87% cyan, 47% magenta, 0% yellow and 0% black.

Black text is the more readable choice on this background (contrast 6.03:1).

Pool Water (#2188FF) color codes

HEX	`#2188FF`
RGB	`rgb(33, 136, 255)`
RGB percent	`rgb(12.9%, 53.3%, 100%)`
HSL	`hsl(212, 100%, 56%)`
HSV / HSB	`hsv(212, 87%, 100%)`
CMYK	`cmyk(87%, 47%, 0%, 0%)`
CIE LAB	`lab(57.22, 15, -66.86)`
CIE LCH	`lch(57.22, 68.52, 282.64)`
CIE XYZ	`xyz(27.475, 25.148, 97.994)`
Decimal	`2197759`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with Pool Water, 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 #2188FF	Ratio	AA	AAA	AA large
Sample text	6.03:1	Pass	Fail	Pass
Sample text	3.48:1	Fail	Fail	Pass

#2188FF as text on	Ratio	AA	AAA	AA large
Sample text	3.48:1	Fail	Fail	Pass
Sample text	6.03:1	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 #2188FF looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #2188ff; }
.text { color: #2188ff; }
.border { border: 2px solid #2188ff; }
.transparent { background-color: rgb(33 136 255 / 50%); }
.gradient { background: linear-gradient(to right, #2188ff, #2921ff); }

Background

Text color

Border

Similar colors

See #2188FF on its hex code page

Questions

What color is #2188FF?: #2188FF is a vivid azure known as Pool Water. It belongs to the blue family of colors.
What is the RGB value of Pool Water?: The RGB value is 33, 136, 255: 33 red, 136 green and 255 blue on a 0 to 255 scale.
What is the complementary color of Pool Water?: The complementary color is #FF9821, found by rotating the hue 180° on the color wheel.
Is black or white text better on #2188FF?: Black text. Black text has a contrast ratio of 6.03:1 and white text 3.48:1. WCAG asks for at least 4.5:1 for normal text.