Dark Blue-Gray

HEX #666699 / RGB (102, 102, 153)

Blue-Gray diamond illustration

What is Dark Blue-Gray Color?

Dark Blue-Gray (Hex code: 666699) Thumbnail

Dark Blue-Gray has the hex code #666699. The equivalent 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, Dark Blue-Gray 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.

Dark Blue-Gray is a purplish-blue color. Though the color is web safe, it is not a web color and can only be used in HTML and CSS code with its hex, RGB, CMYK and HSB values.

Dark Blue-Gray Color Codes

Hex Code#666699
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]
Dark Blue-Gray Converted to Grayscale Codes
Simple Average#777777
Weighted Average (Most Common)#6C6C6C
Weighted Average (Luma)#6A6A6A
Weighted Average (Gamma Adjusted)#A7A7A7

Dark Blue-Gray Color Palettes

Complementary color palette of 666699. Complementary color is 999966

Complementary Palette

The complement of Dark Blue-Gray is Moss Green with the hex code #999966. 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.

Analogous color palette with (666699, 806699 and 668099)

Analogous Palette

The analogous colors of Dark Blue-Gray (#666699) are French Lilac (#806699) and Slate Gray (#668099). In the RGB color wheel, these two analogous colors occur to the right and left of Dark Blue-Gray with a 30° separation on either side. An analogous color palette is extremely soothing to the eyes and works wonders if your main color is soft or pastel.

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

Split-Complementary Palette

As per the RGB color wheel, the split-complementary colors of Dark Blue-Gray (#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.

Triadic color palette with (666699, 996666 and 669966)

Triadic Palette

Dark Blue-Gray 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 create a stunning and beautiful triadic palette with the maximum variation in hue and, therefore, offering the best possible contrast when taken together.

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

Tetradic Palette

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

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

Square Palette

Dark Blue-Gray square color palette has #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.

Rainbow color

Dark Blue-Gray Color Rainbow Palette

Our Dark Blue-Gray rainbow color palette is based on the RGB 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.

Tints, Tones & Shades of Dark Blue-Gray Color


  • Transparent 8585AD#8585AD
  • Transparent 9494B8#9494B8
  • Transparent A3A3C2#A3A3C2
  • Transparent B3B3CC#B3B3CC
  • Transparent C2C2D6#C2C2D6
  • Transparent D1D1E0#D1D1E0
  • Transparent E0E0EB#E0E0EB
  • Transparent F0F0F5#F0F0F5


  • Transparent 6B6B94#6B6B94
  • Transparent 6E6E92#6E6E92
  • Transparent 70708F#70708F
  • Transparent 73738D#73738D
  • Transparent 76768A#76768A
  • Transparent 787888#787888
  • Transparent 7B7B85#7B7B85
  • Transparent 7D7D83#7D7D83


  • Transparent 52527A#52527A
  • Transparent 47476B#47476B
  • Transparent 3D3D5C#3D3D5C
  • Transparent 33334D#33334D
  • Transparent 29293D#29293D
  • Transparent 1F1F2E#1F1F2E
  • Transparent 14141F#14141F
  • Transparent 0A0A0F#0A0A0F

Dark Blue-Gray Color Patterns

  • Transparent

    Dark Blue-Gray Gingham Checks

  • Transparent

    Dark Blue-Gray Vertical Stripes Pattern

  • Transparent

    Dark Blue-Gray Polka Dots Pattern

  • Transparent

    Dark Blue-Gray Honeycomb Pattern

  • Transparent

    Dark Blue-Gray Leaves Pattern

  • Transparent

    Dark Blue-Gray Houndstooth Pattern

  • Transparent

    Dark Blue-Gray Trellis Pattern

  • Transparent

    Dark Blue-Gray Plaid Pattern

Dark Blue-Gray Color Interior Ideas

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

Dark Blue-Gray Color Drawing Room Textured Wall Paint Idea

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

Dark Blue-Gray Color Living Room Wall Paint Idea

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

Dark Blue-Gray Color Bedroom Wall Paint Idea

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

Dark Blue-Gray Color Kitchen Wall Paint Idea

Photo credits: klipartz.com