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ColorWell · contrast check

White or black text on #1877f2?

Facebook blue

Use black text. It gives 4.96:1, which passes AA, not AAA.

White text
4.23:1
passes AA for large text only (18pt+/14pt bold)
Black text
4.96:1
passes AA, not AAA

What the thresholds mean

LevelNeedsWhite textBlack text
AA, normal text4.5:1failpass
AA, large text (18pt+/14pt bold)3:1passpass
AAA, normal text7:1failfail

If you need the other one to pass

Same hue, moved along the lightness ramp until the ratio clears AA.

The colour itself

Shade ramp

#c3f4ff #a4e0ff #7fc5ff #52a3ff #1079fc #005ccb #00419c #002770 #000e47

Paste this into your config

// tailwind.config.js
colors: {
  brand: {
    100: "#c3f4ff",
    200: "#a4e0ff",
    300: "#7fc5ff",
    400: "#52a3ff",
    500: "#1079fc",
    600: "#005ccb",
    700: "#00419c",
    800: "#002770",
    900: "#000e47",
  },
}

Text colour to pair with the 500 shade (#1079fc): black, at 5.16:1. For #1877f2 itself it is black, at 4.96:1.

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.

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