#155dbb

Color #155dbb

A vivid, highly saturated medium blue.

Closest named color Royal Blue #4169e1 · ΔE 16.57 Nearest Tailwind class sky-700 #0069a8 · ΔE 6.7

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#155dbb

RGB

rgb(21, 93, 187)

HSL

hsl(214, 79.8%, 40.8%)

HSV / HSB

hsv(214, 88.8%, 73.3%)

CMYK

cmyk(88.8%, 50.3%, 0%, 26.7%)

LAB

lab(40.53, 15.19, -55.32)

LCH

lch(40.53, 57.37, 285.35)

OKLCH

oklch(49.2%, 0.1632, 257.62)

HWB

hwb(214, 8.2%, 26.7%)

Harmony colors

Complementary

#bb7315

Analogous

#15b0bb

#155dbb

#2015bb

Triadic

#155dbb

#bb155d

#5dbb15

Split-complementary

#155dbb

#bb2015

#b0bb15

Tetradic

#155dbb

#7315bb

#bb7315

#5dbb15

Square

#155dbb

#bb15b0

#bb7315

#15bb20

Shades

Color #155dbb mixed toward black.

#124d9c

#0e3e7d

#0b2e5e

#071f3e

#040f1f

Tints

Color #155dbb mixed toward white.

#1d74e6

#4a90eb

#77abf0

#a5c7f5

#d2e3fa

Tones

Color #155dbb mixed toward gray.

#235fad

#31619f

#3f6392

#4c6484

#5a6676

Accessibility

Aa White text on this color

6.33:1

Aa Black text on this color

3.32:1

White text reads better on this background (6.33:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#4041aa · ΔE 11.8

Deuteranopia

#3c37a6 · ΔE 14.4

Tritanopia

#1d9b98 · ΔE 35.2

Achromatopsia

#606060 · ΔE 25.1

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

Code

CSS

background-color: #155dbb;

Tailwind (arbitrary value)

bg-[#155dbb]

Related colors

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Cornflower Blue #6495ed

Alice Blue #f0f8ff

Frequently asked questions

#155dbb (#155dbb) is rgb(21, 93, 187) in RGB.

No, #155dbb is not web-safe. The nearest web-safe colors are among its tones and shades below.

Related tools

Colors

HEX to RGB Converter

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

Try it → Accessibility

Contrast Checker

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

Try it → Generators

Palette Generator

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

Try it →

Build something with this color

Generate a full palette from #155dbb, or check how it holds up for accessibility.

Generate a palette → Check contrast