#1C66B2 Hex Color
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This muted, mid-tone blue carries a professional weight, making it a standard choice for finance and security branding where stability matters. The hex code #1c66b2 provides excellent readability with white text, offering a contrast ratio of 5.8:1 for small, sharp UI elements. It works best as a secondary accent color rather than a primary background, as its slight desaturation can feel flat at large scales.
Questions about #1c66b2
What is #1c66b2 in RGB, HSL and CMYK?
In RGB, #1c66b2 is rgb(28, 102, 178), in HSL hsl(210, 73%, 40%) and in CMYK 84%, 43%, 0%, 30%.
Where does #1c66b2 work best in UI design?
Use #1c66b2 as a secondary accent color for buttons, alerts, or links where clarity is paramount. Its professional weight feels less jarring than bright primary blues, making it ideal for financial applications or data-heavy dashboards requiring high contrast against white text.
What colors complement #1c66b2?
Is #1c66b2 readable on white or black?
#1c66b2 has a 5.84:1 contrast ratio on white and 3.59:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works for body text and on black it works only for large text (24px, or 18.5px bold). Try other pairs in the contrast checker.