ColorWell · contrast check
White or black text on #25d366?
WhatsApp green
Use black text. It gives 10.59:1, which passes AAA (and AA).
White text
1.98:1
fails AA
Black text
10.59:1
passes AAA (and AA)
What the thresholds mean
| Level | Needs | White text | Black text |
|---|---|---|---|
| AA, normal text | 4.5:1 | fail | pass |
| AA, large text (18pt+/14pt bold) | 3:1 | fail | pass |
| AAA, normal text | 7:1 | fail | pass |
If you need the other one to pass
Same hue, moved along the lightness ramp until the ratio clears AA.
- For white text, use
#007d19— 5.32:1
The colour itself
- Hex:
#25d366 - RGB:
37, 211, 102 - Oklch:
76.1% 0.201 150
Shade ramp
#bcffca #99f7ad #6de18a #2ac360 #00a02c #007d19 #005d04 #003e00 #002100
Paste this into your config
// tailwind.config.js
colors: {
brand: {
100: "#bcffca",
200: "#99f7ad",
300: "#6de18a",
400: "#2ac360",
500: "#00a02c",
600: "#007d19",
700: "#005d04",
800: "#003e00",
900: "#002100",
},
}Text colour to pair with the 500 shade (#00a02c): black, at 6.06:1. For #25d366 itself it is black, at 10.59:1.
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