#646691 Hex Color

Grounded indigo with cool, professional undertones

Hex color #646691 graphic
This dusty, muted indigo feels grounded and analytical rather than whimsical. With its low saturation and ashy undertones, #646691 functions best as a supporting background color for tech or professional branding. It maintains solid contrast for white text, offering a sophisticated alternative to standard grey. Because of its cool, restrained character, pair this hex code with warm terracotta accents to balance the palette.

Questions about #646691

What is #646691 in RGB, HSL and CMYK?
In RGB, #646691 is rgb(100, 102, 145), in HSL hsl(237, 18%, 48%) and in CMYK 31%, 30%, 0%, 43%.
What colors pair well with #646691?
To balance the cool, restrained nature of #646691, pair it with warm terracotta or soft peach accents. These warm tones cut through the ashiness and provide a vibrant contrast that makes the indigo feel less clinical and more approachable for design layouts.
Is #646691 suitable for text on a white background?
#646691 maintains solid contrast against white, making it a reliable choice for professional text or UI elements. However, for smaller body text, consider darkening the shade slightly to ensure accessibility standards are fully met across all screen sizes and device lighting conditions.
Is #646691 readable on white or black?
#646691 has a 5.45:1 contrast ratio on white and 3.85:1 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.