#646566 Hex Color
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A muted, mid-dark gray, #646566 has an ashy, dusty quality that feels neutral and restrained. Its low saturation supports professional interfaces, product design, and minimal layouts without competing with content. Use it as a dominant surface with white typography, which reaches about 5.8:1 contrast. The hex code #646566 also pairs well with warm white and brushed metal tones.
Questions about #646566
What is #646566 in RGB, HSL and CMYK?
In RGB, #646566 is rgb(100, 101, 102), in HSL hsl(210, 1%, 40%) and in CMYK 2%, 1%, 0%, 60%.
Is #646566 a warm or cool gray?
#646566 reads as a cool-neutral gray because its red, green, and blue values are nearly balanced, with blue slightly higher than red, creating a faint ashy cast rather than a strongly blue appearance.
What colors pair well with #646566?
Where does #646566 work best?
#646566 works well for professional interfaces, product design, minimal layouts, and dominant surfaces behind white text, where its muted value adds structure without competing with content or product imagery.
Is #646566 readable on white or black?
#646566 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.