#288ec9

Color #288ec9

A moderately saturated medium blue.

Closest named color Steel Blue #4682b4 · ΔE 8.33 Nearest Tailwind class sky-600 #0084d1 · ΔE 4.4

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Conversions

HEX

#288ec9

RGB

rgb(40, 142, 201)

HSL

hsl(202, 66.8%, 47.3%)

HSV / HSB

hsv(202, 80.1%, 78.8%)

CMYK

cmyk(80.1%, 29.4%, 0%, 21.2%)

LAB

lab(56.1, -8.09, -38.53)

LCH

lch(56.1, 39.37, 258.14)

OKLCH

oklch(61.7%, 0.1263, 239.76)

HWB

hwb(202, 15.7%, 21.2%)

Harmony colors

Complementary

#c96328

Analogous

#28c9b4

#288ec9

#283ec9

Triadic

#288ec9

#c9288e

#8ec928

Split-complementary

#288ec9

#c9283e

#c9b428

Tetradic

#288ec9

#6328c9

#c96328

#8ec928

Square

#288ec9

#b428c9

#c96328

#3ec928

Shades

Color #288ec9 mixed toward black.

#2176a8

#1b5f86

#144765

#0d2f43

#071822

Tints

Color #288ec9 mixed toward white.

#44a3da

#6ab5e1

#8fc8e9

#b4daf0

#daedf8

Tones

Color #288ec9 mixed toward gray.

#358bbc

#4387ae

#5083a1

#5e8093

#6b7c86

Accessibility

Aa White text on this color

3.62:1

Aa Black text on this color

5.8:1

Black text reads better on this background (5.8:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#6565bd · ΔE 21

Deuteranopia

#5f57ba · ΔE 24.6

Tritanopia

#33b3b0 · ΔE 23.4

Achromatopsia

#868686 · ΔE 21

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #288ec9;

Tailwind (arbitrary value)

bg-[#288ec9]

Related colors

Light Sky Blue #87cefa

Charcoal #36454f

Sky Blue #87ceeb

Steel Blue #4682b4

Alice Blue #f0f8ff

Deep Sky Blue #00bfff

Frequently asked questions

#288ec9 (#288ec9) is rgb(40, 142, 201) in RGB.

No, #288ec9 is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #288ec9, or check how it holds up for accessibility.

Generate a palette → Check contrast