#666699 Hex Code

Color Name: Dark Blue-Gray

What is hex #666699 Color?

Dark Blue-Gray (Hex code: 666699) Thumbnail

The color name of hex code #666699 is Dark Blue-Gray. The RGB values are (102, 102, 153) which means it is composed of 29% red, 29% green and 43% blue. The CMYK color codes, used in printers, are C:33 M:33 Y:0 K:40. In the HSV/HSB scale, #666699 has a hue of 240°, 33% saturation and a brightness value of 60%.
Details of other color codes including equivalent web safe and HTML & CSS colors are given in the table below. Also listed are the closest Pantone® (PMS) and RAL colors.

Download Dark Blue-Gray Solid Color Background

Hex #666699 Color Codes

Color NameDark Blue-Gray
RGB Values(102, 102, 153)
CMYK Values(33%, 33%, 0%, 40%)
HSV/HSB Values(240°, 33%, 60%)
Closest Web Safe#666699
Inverse Color#999966 [Moss Green]
Closest Pantone®7669 C
Closest RAL4005 [Blue lilac]
Complementary Color#999966 [Moss Green]
#666699 Converted to Grayscale Codes
Simple Average#777777
Weighted Average (Most Common)#6C6C6C
Weighted Average (Luma)#6A6A6A
Weighted Average (Gamma Adjusted)#A7A7A7

Hex #666699 Color Palettes

Complementary color palette of 666699. Complementary color is 999966

Complementary Palette

The complement of #666699 is #999966 which is called Moss Green. Complementary colors are those found at the opposite ends of the color wheel. Thus, as per the RGB system, the best contrast to #666699 color is offered by #999966. The complementary color palette is easiest to use and work with. Studies have shown that contrasting color palette is the best way to grab a viewer's attention.

666699 999966
Analogous color palette with (666699, 806699 and 668099)

Analogous Palette

The analogous colors of #666699 are #806699 and #668099, called French Lilac and Slate Gray, respectively. In the RGB color wheel, they are located to the right and left of #666699 with a 30° separation. An analogous color palette is extremely soothing to the eyes and works wonders if your main color is soft or pastel.

666699 806699 668099
Split Complementary color palette with (666699, 998066 and 809966)

Split-Complementary Palette

As per the RGB color wheel, the split-complementary colors of #666699 are #998066 (Beaver) and #809966 (Moss Green). A split-complementary color palette consists of the main color along with those on either side (30°) of the complementary color. Based on our research, usage of split-complementary palettes is on the rise online, especially in graphics and web sites designs. It may be because it is not as contrasting as the complementary color palette and, hence, results in a combination which is pleasant to the eyes.

666699 998066 809966
Triadic color palette with (666699, 996666 and 669966)

Triadic Palette

#666699 triadic color palette has three colors each of which is separated by 120° in the RGB wheel. Thus, #996666 (Copper Rose) and #669966 (Russian Green) along with #666699, our main color, create a stunning and beautiful triadic palette with the maximum variation in hue and, therefore, offering the best possible contrast when taken together.

666699 996666 669966
Tetradic color palette with (666699, 996666, 999966 and 669999)

Tetradic Palette

The tetradic palette of #666699 has #996666 (Copper Rose), #999966 (Moss Green) and #669999 (Desaturated Cyan). A tetradic color palette is complex and, in most cases, should not be used off-the-shelf. We suggest tweaking the colors a little bit to achieve desired results.

666699 996666 999966 669999
Square color palette with (666699, 996680, 999966 and 669980)

Square Palette

The square color palette of #666699 contains #996680 (Antique Fuchsia), #999966 (Moss Green) and #669980 (Oxley). Quite like triadic, the hues in a square palette are at the maximum distance from each other, which is 90°.
Note: For several colors purposes, a square palette may look much better than the tetrad color palette.

666699 996680 999966 669980
Rainbow color

Hex #666699 Rainbow Colors Palette

Our #666699 rainbow color palette is based on the RGB color model and consists of 7 colors, just like the traditional rainbow. You might not see a lot of variation in color, especially if the chosen color is dark or extremely light. However, this can lead interesting rainbow palettes that are faded, soft, pastel or dull.

666699 926699 996675 998366 839966 669975 669299

Tints, Tones & Shades of 666699 Color


  • Transparent 8585AD8585AD
  • Transparent 9494B89494B8
  • Transparent A3A3C2A3A3C2
  • Transparent B3B3CCB3B3CC
  • Transparent C2C2D6C2C2D6
  • Transparent D1D1E0D1D1E0
  • Transparent E0E0EBE0E0EB
  • Transparent F0F0F5F0F0F5


  • Transparent 6B6B946B6B94
  • Transparent 6E6E926E6E92
  • Transparent 70708F70708F
  • Transparent 73738D73738D
  • Transparent 76768A76768A
  • Transparent 787888787888
  • Transparent 7B7B857B7B85
  • Transparent 7D7D837D7D83


  • Transparent 52527A52527A
  • Transparent 47476B47476B
  • Transparent 3D3D5C3D3D5C
  • Transparent 33334D33334D
  • Transparent 29293D29293D
  • Transparent 1F1F2E1F1F2E
  • Transparent 14141F14141F
  • Transparent 0A0A0F0A0A0F

#666699 Color Patterns

  • transperent

    #666699 Gingham Checks

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    #666699 Vertical Stripes Pattern

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    #666699 Polka Dots Pattern

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    #666699 Honeycomb Pattern

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    #666699 Leaves Pattern

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    #666699 Houndstooth Pattern

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    #666699 Trellis Pattern

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    #666699 Plaid Pattern

#666699 Color Interior Ideas

Pretty Photo frame on Dark Blue-Gray color drawing room interior textured wall

#666699 Color Drawing Room Textured Wall Paint Idea

Pretty Photo frame on Dark Blue-Gray color Living room wal color

#666699 Color Living Room Wall Paint Idea

Pretty Photo frame on Dark Blue-Gray color Bedroom interior wall color

#666699 Color Bedroom Wall Paint Idea

Pretty Photo frame on Dark Blue-Gray color kitchen interior wall color

#666699 Color Kitchen Wall Paint Idea

Color names have been derived from known and trusted lists OR have been formulated by us. They are close approximations and may not translate to exact names. Also, color is perceived and named differently in cultures and communities around the world. As per studies, only a handful of colors are interpretted and named in the same way across the globe.