#666666 color code insights

All the conversions, harmonies, and accessibility checks you need to design with confidence.

RGB:rgb(102, 102, 102)

HSL:hsl(0, 0%, 40%)

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HEX

#666666

RGB

102, 102, 102

HSL

0°, 0%, 40%

HSV

0°, 0%, 40%

CMYK

0%, 0%, 0%, 60%

Color Conversion

Generate values across multiple color models in one place.

HEX

#666666

≈ Steel Blue

Tints & shades

Explore how #666666 behaves when you mix it with white or black. These swatches are perfect for hover states, shadows, and backgrounds.

Hover to copy any hex value and reuse it across your interface.

Shades

0–100%

0%#666666

10%#5C5C5C

20%#525252

30%#474747

40%#3D3D3D

50%#333333

60%#292929

70%#1F1F1F

80%#141414

90%#0A0A0A

100%#000000

Tints

0–100%

0%#666666

10%#757575

20%#858585

30%#949494

40%#A3A3A3

50%#B3B3B3

60%#C2C2C2

70%#D1D1D1

80%#E0E0E0

90%#F0F0F0

100%#FFFFFF

Color harmonies

Build balanced palettes instantly with harmonies generated from #666666.

Click any swatch to open its own detail page and keep exploring.

Complementary

Opposite hues that create impact and bold contrast.

#666666

Analogous

Neighboring hues for natural, fluid gradients.

#666666

Triadic

Three evenly spaced hues for playful balance.

#666666

Tetradic

Two complementary pairs that deliver rich variety.

#666666

Monochromatic

Lighter and darker siblings inside the same hue family.

Accessibility contrast

Check how readable #666666 is with common text colors so every visitor enjoys a clear experience.

Use AA as the baseline for body copy and AAA for premium accessibility.

Sample text on black text

Text color#000000

Background#666666

Contrast ratio3.66:1

WCAG levelFail

Sample text on white text

Text color#FFFFFF

Background#666666

Contrast ratio5.74:1

WCAG levelAA

Recommended text preview

Text color#FFFFFF

Background#666666

Contrast ratio5.74:1

WCAG levelAA

Technical Formats

Unlock pro color spaces like XYZ, LAB, CMYK variants, and export-ready profiles.

Practical Formats

Get print simulations, LED mappings, and developer-ready byte orders.

Color Analysis

Dive into spectral data, dominance reports, and advanced analytics.

Blindness Simulator

Preview how #666666 appears across common color-vision deficiencies.

Creative Aspects

Explore seasonal associations, emotional cues, and natural occurrences.

Design guidance

Balance

Treat #666666 as a highlight. Pair it with neutrals and one supporting hue to avoid visual overload.

Contrast

Test combinations with real content. Higher contrast improves scanning, readability, and conversions.

Harmony

Use lighter tints for surfaces, the base color for primaries, and darker shades for hover or pressed states.

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