COLOR
#253961
≈ Nautilus
Values · copy any
On white
Aa
11.43:1
Passes AAA
On black
Aa
1.53:1
Fails AA
Best text on this color
Aa#FFFFFF(11.43:1)
Adjust & explore
drag the picker or wheel — values & harmonies update livePicker · drag to explore
Harmonies · live
Colour-blindness preview
Normal vision#253961
Protanopia#283D63
Deuteranopia#203760
Tritanopia#004248
Tints & shades
Color harmonies
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Colors that go with Nautilus
Nautilus 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.
Nautilus — meaning & where to use it
Nautilus is a deep, shadowy 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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This exact shade isn't a named or standard-set colour, so it isn't indexed — but every tool above works.