#645F59 Hex Color
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#645f59 is a dark, muted gray-brown with warm, ashy undertones. Its low saturation creates a serious, weathered mood suited to vintage branding, coffee packaging, legal materials, and organic products. Use it as a dominant background with white text, which provides about 6.3:1 contrast. The hex code #645f59 also works as a grounding accent beside cream or copper.
Questions about #645f59
What is #645f59 in RGB, HSL and CMYK?
In RGB, #645f59 is rgb(100, 95, 89), in HSL hsl(33, 6%, 37%) and in CMYK 0%, 5%, 11%, 61%.
What colors pair well with #645f59?
Pair #645f59 with cream for softer contrast, copper or terracotta for added warmth, and muted navy for a cooler counterpoint. These combinations preserve its weathered character while giving layouts enough separation for accents, headings, or packaging details.
Does #645f59 look warm or cool?
#645f59 reads warm rather than cool because its muted gray base carries brown, ashy undertones that add earthy warmth without much saturation, producing a restrained, weathered mood rather than a rich or vivid appearance.
Is #645f59 readable on white or black?
#645f59 has a 6.31:1 contrast ratio on white and 3.32:1 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.