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slate-400

#90a1b9

Tailwind CSS v4.3.3 slate-400 is oklch(70.4% 0.04 256.788) in OKLCH, the format Tailwind uses, and #90a1b9 in HEX.

Class
OKLCH
HEX
RGB
HSL
CSS
Open #90a1b9 in the pickerCheck contrast

Classes

Click to copy. Add /50 for 50% opacity, for example bg-slate-400/50.

Text on slate-400

  • Aawhite2.63:1Hard to read
  • Aablack7.99:1Readable · AA
  • Aaslate-9507.68:1Readable · AA

Most readable text from the slate scale: slate-950

Tailwind slate scale

  1. 50
  2. 100
  3. 200
  4. 300
  5. 400
  6. 500
  7. 600
  8. 700
  9. 800
  10. 900
  11. 950

Step 400 in other Tailwind colors

Questions and answers

What is the hex code of Tailwind slate-400?

slate-400 is #90a1b9 in HEX, rgb(144 161 185) in RGB and oklch(70.4% 0.04 256.788) in OKLCH. Tailwind CSS v4.3.3 defines its colors in OKLCH, so the HEX value is the closest sRGB match.

Is Tailwind slate-400 accessible for text?

White text on slate-400 has a contrast ratio of 2.63:1 and black text 7.99:1. WCAG AA needs 4.5:1 for normal text and 3:1 for large text, so black text is the better choice here.

How do I use slate-400 in Tailwind CSS?

Add bg-slate-400, text-slate-400 or border-slate-400 to an element. In your own CSS use var(--color-slate-400), the CSS variable Tailwind v4 creates for every color.