ColorWell · contrast check
White or black text on #0070f3?
the Vercel blue
Use black text. It gives 4.61:1, which passes AA, not AAA.
White text
4.55:1
passes AA, not AAA
Black text
4.61:1
passes AA, not AAA
What the thresholds mean
| Level | Needs | White text | Black text |
|---|---|---|---|
| AA, normal text | 4.5:1 | pass | pass |
| AA, large text (18pt+/14pt bold) | 3:1 | pass | pass |
| AAA, normal text | 7:1 | fail | fail |
The colour itself
- Hex:
#0070f3 - RGB:
0, 112, 243 - Oklch:
57.31% 0.214 258
Shade ramp
#c1f4ff #a1e0ff #7bc4ff #4da2ff #0077ff #005bd1 #003fa1 #002574 #000c49
Paste this into your config
// tailwind.config.js
colors: {
brand: {
100: "#c1f4ff",
200: "#a1e0ff",
300: "#7bc4ff",
400: "#4da2ff",
500: "#0077ff",
600: "#005bd1",
700: "#003fa1",
800: "#002574",
900: "#000c49",
},
}Text colour to pair with the 500 shade (#0077ff): black, at 5.08:1. For #0070f3 itself it is black, at 4.61:1.
Your own colours, the same way
Paste any hex and get this page for it live — ratio, verdict, ramp. Export the whole palette to CSS variables, a Tailwind config or Figma tokens when you want it in the project rather than on the screen.
Open ColorWellOther colours
- text on #ef4444 Tailwind red-500
- text on #f97316 Tailwind orange-500
- text on #f59e0b Tailwind amber-500
- text on #eab308 Tailwind yellow-500
- text on #84cc16 Tailwind lime-500
- text on #22c55e Tailwind green-500
- text on #10b981 Tailwind emerald-500
- text on #14b8a6 Tailwind teal-500
- text on #06b6d4 Tailwind cyan-500
- text on #0ea5e9 Tailwind sky-500
- text on #3b82f6 Tailwind blue-500
- text on #6366f1 Tailwind indigo-500