COLOR
#667F8C
≈ Citadel
Values · copy any
On white
Aa
4.22:1
AA · large text
On black
Aa
4.15:1
AA · large text
Best text on this color
Aa#FFFFFF(4.22:1)
Adjust & explore
drag the picker or wheel — values & harmonies update livePicker · drag to explore
Harmonies · live
Colour-blindness preview
Normal vision#667F8C
Protanopia#797E8D
Deuteranopia#73798C
Tritanopia#5B8383
Tints & shades
Color harmonies
Open in scheme generator →Colors that go with Citadel
Citadel 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.
Citadel — meaning & where to use it
Citadel is a rich, mid-toned 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.
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