Color #666666
Web safeA nearly neutral, gray-leaning medium red.
Conversions
#666666rgb(102, 102, 102)hsl(0, 0%, 40%)hsv(0, 0%, 40%)cmyk(0%, 0%, 0%, 60%)lab(43.19, -0, 0)lch(43.19, 0, 180)oklch(51%, 0, 0)hwb(0, 40%, 60%)Harmony colors
Accessibility
White text reads better on this background (5.74:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.
Under color vision deficiencies
Protanopia
#666666 · ΔE 0
Deuteranopia
#666666 · ΔE 0
Tritanopia
#666666 · ΔE 0
Achromatopsia
#666666 · ΔE 0
Left half is the original, right half is the simulated appearance. See all 8 vision types →
Code
background-color: #666666;bg-[#666666]Related colors
Frequently asked questions
#666666 (#666666) is rgb(102, 102, 102) in RGB.
Yes, #666666 is one of the 216 web-safe colors — every channel is a multiple of 51.
Related tools
HEX to RGB Converter
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Try it → AccessibilityContrast Checker
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Try it → GeneratorsPalette Generator
Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.
Try it →Build something with this color
Generate a full palette from #666666, or check how it holds up for accessibility.