#001CBB Hex Color
A high-intensity electric blue with impact
#001cbb is a highly saturated, deep blue that leans toward an electric intensity. It commands attention and provides excellent contrast against white text, making it a strong choice for UI backgrounds or bold branding elements. Because of its vivid nature, use it as a 30% accent color rather than a massive wall of color. The hex code for this powerful blue is #001cbb.
Questions about #001cbb
What is #001cbb in RGB, HSL and CMYK?
In RGB, #001cbb is rgb(0, 28, 187), in HSL hsl(231, 100%, 37%) and in CMYK 100%, 85%, 0%, 27%.
How should #001cbb be used in interface design?
#001cbb is best applied as a strategic 30% accent rather than a primary background to avoid overwhelming the user. It works exceptionally well for call-to-action buttons or highlighted navigation elements that require a sharp, crisp contrast against clean white space.
What colors pair well with #001cbb for a balanced palette?
This intense blue pairs naturally with light gray or cool-toned neutrals to ground its vibrancy without creating visual fatigue. For a more sophisticated look, try balancing it against warm cream tones which soften the electric intensity of the shade.
Is #001cbb readable on white or black?
#001cbb has a 11.14:1 contrast ratio on white and 1.88:1 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 is too faint for text. Try other pairs in the contrast checker.