COLOR
#728CD8
≈ King Neptune
Values · copy any
On white
Aa
3.25:1
AA · large text
On black
Aa
5.38:1
Passes AA
Best text on this color
Aa#1C1916(5.38:1)
Adjust & explore
drag the picker or wheel — values & harmonies update livePicker · drag to explore
Harmonies · live
Colour-blindness preview
Normal vision#728CD8
Protanopia#7093DB
Deuteranopia#658AD6
Tritanopia#4A9CA8
Tints & shades
Color harmonies
Open in scheme generator →Palettes with this color
Colors that go with King Neptune
King Neptune sits in the blue family. Pair it with warm accents — amber, coral or gold — to stop it feeling cold, or lean into its harmonies below for a ready-made scheme.
Closest named, CSS & systems
Pantone & RAL matches are coming soon — those libraries aren't openly licensed for redistribution.
King Neptune — meaning & where to use it
King Neptune is a bright blue — it reads as trustworthy, stable and professional. It's a natural fit for corporate, tech and financial brands, and dependable UI chrome. To keep it balanced, pair it with warm accents — amber, coral or gold — to stop it feeling cold.
Share image
Download image1200×1500 — sized for Pinterest, Instagram & social sharing. Free to download and use.
This exact shade isn't a named or standard-set colour, so it isn't indexed — but every tool above works.