#23399B Hex Color
Online color picker to view shades, tints, color codes, and complementary colors
#23399b is a dark, saturated blue with a cool violet undertone and an authoritative feel. It suits finance, technology, healthcare, government, and security branding, especially as a dominant background or uniform color. Pair it with burgundy or warm white for contrast. White text remains highly legible, with about a 9.9:1 contrast ratio. The hex code is #23399b.
Questions about #23399b
What is #23399b in RGB, HSL and CMYK?
In RGB, #23399b is rgb(35, 57, 155), in HSL hsl(229, 63%, 37%) and in CMYK 77%, 63%, 0%, 39%.
What colors pair well with #23399b?
#23399b pairs well with warm white, burgundy, muted gold, and soft gray because these tones balance its cool violet undertone while preserving the impact of its saturated blue in brand palettes and interface layouts.
Does #23399b read as a warm or cool color?
#23399b reads as a cool color because its deep blue base carries a violet undertone, giving it a crisp, controlled feel rather than the warmth associated with red, orange, or yellow.
Where can #23399b be used effectively?
#23399b works well as a dominant background, navigation color, button fill, or uniform color in finance, technology, healthcare, government, and security designs, where its saturated blue gives trust-focused interfaces a firm visual anchor and keeps white labels readable.
Is #23399b readable on white or black?
#23399b has a 9.85:1 contrast ratio on white and 2.13:1 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.