Tailwind blue-900
#1e3a8a — every format, its contrast behaviour, and the rest of the blue scale.
#1e3a8a
Hex
#1e3a8aRGB
rgb(30 58 138)HSL
hsl(224 64% 33%)Background class
bg-blue-900Text class
text-blue-900Border class
border-blue-900On white: 10.36:1 — passes AA for text
On slate-900: 1.72:1 — decoration only
Closest other tokens