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slate-900

#0f172b

Tailwind CSS v4.3.3 slate-900 is oklch(20.8% 0.042 265.755) in OKLCH, the format Tailwind uses, and #0f172b in HEX.

Class
OKLCH
HEX
RGB
HSL
CSS
Open #0f172b in the pickerCheck contrast

Classes

Click to copy. Add /50 for 50% opacity, for example bg-slate-900/50.

Text on slate-900

  • Aawhite17.84:1Readable · AA
  • Aablack1.18:1Hard to read
  • Aaslate-5017.05:1Readable · AA

Most readable text from the slate scale: slate-50

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 900 in other Tailwind colors

Questions and answers

What is the hex code of Tailwind slate-900?

slate-900 is #0f172b in HEX, rgb(15 23 43) in RGB and oklch(20.8% 0.042 265.755) in OKLCH. Tailwind CSS v4.3.3 defines its colors in OKLCH, so the HEX value is the closest sRGB match.

Is Tailwind slate-900 accessible for text?

White text on slate-900 has a contrast ratio of 17.84:1 and black text 1.18:1. WCAG AA needs 4.5:1 for normal text and 3:1 for large text, so white text is the better choice here.

How do I use slate-900 in Tailwind CSS?

Add bg-slate-900, text-slate-900 or border-slate-900 to an element. In your own CSS use var(--color-slate-900), the CSS variable Tailwind v4 creates for every color.