Boston Blue Color (#3B91B4) - Hex Code, RGB, HSL & Tailwind CSS

WCAG 2.1 contrast against white and black text — pick the combination that passes for your use case.

AaThe quick brown fox.

3.56White on this color

AA FailAA Large PassAAA Fail

AaThe quick brown fox.

5.90Black on this color

AA PassAA Large PassAAA Fail

Color in use

Boston Blue applied to common UI primitives — see how it reads in real interfaces.

Buttons

Badges

ActiveFeaturedLive

Typography

A paragraph with an inline link in Boston Blue.

Card

Premium Plan

50+ tools, lifetime updates.

Alert

Heads up — this alert uses Boston Blue as its accent stripe.

Progress & Input

Click any swatch to copy its hex.

Pairings derived from the color wheel — click any swatch to explore.

/* Boston Blue */
:root {
  --color-boston-blue: #3B91B4;
  --color-boston-blue-rgb: 59, 145, 180;
  --color-boston-blue-hsl: 197, 51%, 47%;
}