COLOR
#21EAAA
≈ Onsen
Values · copy any
On white
Aa
1.57:1
Fails AA
On black
Aa
11.18:1
Passes AAA
Best text on this color
Aa#1C1916(11.18:1)
Adjust & explore
drag the picker or wheel — values & harmonies update livePicker · drag to explore
Harmonies · live
Colour-blindness preview
Normal vision#21EAAA
Protanopia#E5D8A6
Deuteranopia#CFC8AE
Tritanopia#00EAD9
Tints & shades
Color harmonies
Open in scheme generator →Colors that go with Onsen
Onsen sits in the teal family. Pair it with coral, warm sand or a soft blush to warm up its coolness, 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.
Onsen — meaning & where to use it
Onsen is a rich, mid-toned teal — it reads as cool, clean and modern. It's a natural fit for tech, healthcare and coastal, spa-like brands. To keep it balanced, pair it with coral, warm sand or a soft blush to warm up its coolness.
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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.