#646864 Hex Color
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#646864 is a midweight grey with a faint green undertone, close to the color of wet concrete or slate. Its low saturation keeps it steady and neutral, never loud. Designers reach for it as a UI background, a supporting tone under brighter accents, or a calmer alternative to flat gray in minimal layouts.
Questions about #646864
What is #646864 in RGB, HSL and CMYK?
In RGB, #646864 is rgb(100, 104, 100), in HSL hsl(120, 2%, 40%) and in CMYK 4%, 0%, 4%, 59%. Browse more shades of gray with names and hex codes.
What colors pair well with #646864?
Its green undertone makes #646864 pair well with warm woods, terracotta, and muted olive tones. For stronger contrast, try off-white text or a burnt orange accent.
Is #646864 warm or cool?
It sits almost dead center but leans a touch cool from its green cast. The low saturation keeps it reading neutral in most palettes.
Is #646864 readable on white or black?
#646864 has a 5.66:1 contrast ratio on white and 3.70:1 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.