Copenhagen Blue color hex code is #21638B

What is Copenhagen Blue Color?

Copenhagen Blue (Hex code: 21638B) Thumbnail

Copenhagen Blue has the hex code #21638B. The equivalent RGB values are (33, 99, 139), which means it is composed of 12% red, 37% green and 51% blue. The CMYK color codes, used in printers, are C:76 M:29 Y:0 K:46. In the HSV/HSB scale, Copenhagen Blue has a hue of 203°, 76% saturation and a brightness value of 55%.
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.

Copenhagen Blue is from the RAL Design list where it is included with the number 260 40 30. RAL is a popular color matching system used in several European countries like Germany, Italy, France and the United Kingdom. RAL Design, which has colors for interiors, is different from the RAL Classic list.

Copenhagen Blue color hex code is #21638B which can be used along with RGB (33, 99, 139) or HSL values in HTML and/or CSS to display the color on web pages. Please note that the corresponding CMYK values and the Pantone (PMS) number listed on this page have been calculated from the hexadecimal color code and are only approximations.

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Copenhagen Blue Color Codes

Hex Code	#21638B
RGB Values	(33, 99, 139)
CMYK Values	(76%, 29%, 0%, 46%)
HSV/HSB Values	(203°, 76%, 55%)
Closest Web Safe	#336699
Inverse Color	#DE9C74 [Tan (Crayola)]
Closest Pantone®	647 C
Closest RAL	5025 [Pearl gentian blue]
Complementary Color	#8B4921 [Russet]

Copenhagen Blue Converted to Grayscale Codes
Simple Average	#5A5A5A
Desaturated	#565656
Weighted Average (Most Common)	#545454
Weighted Average (Luma)	#585858
Weighted Average (Gamma Adjusted)	#999999

Copenhagen Blue Color Palettes

Complementary color palette of 21638B. Complementary color is 8B4921

Complementary Palette

The complement of Copenhagen Blue is Russet with the hex code #8B4921. Complementary colors are those found at the opposite ends of the color wheel. Thus, as per the RGB system, the best contrast to #21638B color is offered by #8B4921. 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.

21638B 8B4921

Analogous color palette with (21638B, 212E8B and 218B7E)

Analogous Palette

The analogous colors of Copenhagen Blue (#21638B) are Cosmic Cobalt (#212E8B) and Celadon Green (#218B7E). In the RGB color wheel, these two analogous colors occur to the right and left of Copenhagen Blue 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.

21638B 212E8B 218B7E

Split Complementary color palette with (21638B, 8B212E and 8B7E21)

Split-Complementary Palette

As per the RGB color wheel, the split-complementary colors of Copenhagen Blue (#21638B) are #8B212E (Antique Ruby) and #8B7E21 (Bistre Brown). 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.

21638B 8B212E 8B7E21

Triadic color palette with (21638B, 8B2163 and 638B21)

Triadic Palette

Copenhagen Blue triadic color palette has three colors each of which is separated by 120° in the RGB wheel. Thus, #8B2163 (Dark Raspberry) and #638B21 (Olive Drab (#3)) along with #21638B create a stunning and beautiful triadic palette with the maximum variation in hue and, therefore, offering the best possible contrast when taken together.

21638B 8B2163 638B21

Tetradic color palette with (21638B, 8B2163, 8B4921 and 218B49)

Tetradic Palette

The tetradic palette of Copenhagen Blue has four colors - #8B2163 (Dark Raspberry), #8B4921 (Russet) and #218B49 (Sea Green) in addition to the base color (#21638B). 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.

21638B 8B2163 8B4921 218B49

Square color palette with (21638B, 7E218B, 8B4921 and 2E8B21)

Square Palette

Copenhagen Blue square color palette has #7E218B (Maximum Purple), #8B4921 (Russet) and #2E8B21 (Forest Green (Web)). 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.

21638B 7E218B 8B4921 2E8B21

Copenhagen Blue Color Rainbow Palette

Our Copenhagen Blue 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.

21628B 3A218B 8B2181 8B2126 8B7721 448B21 218B59