Blue

Pure, unadulterated blue, like a summer sky.

#0000ff

Blue is a vivid blue.

It can be described as vivid, vibrant, strong and bold.

Set in white, because white reads best on it.

Blue

Blue is one of the three primary colours in the RGB (additive) colour model, as well as in the RYB colour model. It lies between violet and cyan on the spectrum of visible light. The term blue generally describes colours perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called the Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.

Read on Wikipedia

Blue

Proper noun

A surname from German. An anglicization of German Blau.
A female given name from English, typically used in conjoined names like Bonnie Blue or Blue Bell.

Noun

A letterman at Oxford or Cambridge.
A member of the Royal Horse Guards (which merged with the 1st Dragoons in 1969)

Wiktionary

Its neighbors.

Graphical 80’s Sky, #0000fc Icelandic Water, #0011ff Primary Blue, #0804f9 Royal Blue Tang, #1600fc Star of David, #0000f7 Strong Blue, #0c06f7 Rich Blue, #021bf9 Is It Cold, #0022ff Blue Pencil, #2200ff Midsummer Nights, #0011ee Blue Overdose, #0020ef Hyperlink Blue, #0000ee

Blue

#0000ff

Blue

Blue

Blue

Its neighbors.

Its complements.

As a ramp.