#428AD9 Hex Color
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#428ad9 is a muted, cool blue that feels steady and professional. It lacks the harshness of vivid primaries, making it a reliable choice for finance and security interfaces. This hex code pairs well with dark grays or soft off-whites to maintain readability. Because black text offers a 5.9:1 contrast ratio against this shade, it functions perfectly for accessible, readable body text in web applications.
Questions about #428ad9
What is #428ad9 in RGB, HSL and CMYK?
In RGB, #428ad9 is rgb(66, 138, 217), in HSL hsl(211, 67%, 55%) and in CMYK 70%, 36%, 0%, 15%.
Why is #428ad9 a good choice for user interfaces?
#428ad9 offers a stable, professional appearance that feels approachable without being distracting. Its balanced saturation allows for high readability, making it an excellent primary color choice for enterprise software, dashboard layouts, and clean financial applications.
What colors pair best with #428ad9?
Because of its muted nature, #428ad9 works beautifully alongside neutral tones like charcoal or soft off-whites to ground your design. If you need a complementary accent, a soft orange or warm cream can provide a necessary visual contrast.
Is #428ad9 readable on white or black?
#428ad9 has a 3.57:1 contrast ratio on white and 5.86:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works only for large text (24px, or 18.5px bold) and on black it works for body text. Try other pairs in the contrast checker.