#666665 Hex Color
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#666665 is a muted, ashy grey that offers a stable and professional foundation for clean, minimal interfaces. Because it is highly neutral and desaturated, it avoids competing with other colors in a palette. Use it as a dominant background tone to ground brighter accents. White text provides excellent readability over this shade, comfortably meeting WCAG AA standards for body text.
Questions about #666665
What is #666665 in RGB, HSL and CMYK?
In RGB, #666665 is rgb(102, 102, 101), in HSL hsl(60, 0%, 40%) and in CMYK 0%, 0%, 1%, 60%.
Does #666665 lean warm or cool?
#666665 functions as a neutral, but its ash-like quality gives it a slight cool bias compared to warmer, beige-toned greys. This characteristic makes it an ideal background when you want to avoid visual clutter while keeping the design feeling crisp and modern.
What colors pair best with #666665?
Because #666665 is so desaturated, it works as a blank canvas for high-contrast accents like vibrant yellow or deep navy. Using it to anchor bright colors allows those secondary hues to pop without the interface feeling chaotic or over-designed.
Is #666665 readable on white or black?
#666665 has a 5.74:1 contrast ratio on white and 3.65:1 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.