Indigo has the hex code #4B0082. The equivalent RGB values are (75, 0, 130), which means it is composed of 37% red, 0% green and 63% blue. The CMYK color codes, used in printers, are C:42 M:100 Y:0 K:49. In the HSV/HSB scale, Indigo has a hue of 275°, 100% saturation and a brightness value of 51%. 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.
Named after the country India, Indigo is a traditional color that has been made for millennia from the dye of Indigofera tinctoria plant. However, this indigo is closer to violet than the blue of the dye after which it is named. Since the middle of the 20th century, this color provides a better representation of the indigo used in pigments and paints than the traditional color.
The color is included in the X11 and web colors lists and can be used in HTML and CSS code with its name, “indigo”, in addition to the hex, RGB, CMYK and HSB values. Other names: Web Indigo
The complement of Indigo is Metallic Green with the hex code #378200. Complementary colors are those found at the opposite ends of the color wheel. Thus, as per the RGB system, the best contrast to #4B0082 color is offered by #378200. 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.
The analogous colors of Indigo (#4B0082) are Philippine Violet (#820078) and Navy Blue (#0A0082). In the RGB color wheel, these two analogous colors occur to the right and left of Indigo 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.
As per the RGB color wheel, the split-complementary colors of Indigo (#4B0082) are #788200 (Olive) and #00820A (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.
Indigo triadic color palette has three colors each of which is separated by 120° in the RGB wheel. Thus, #824B00 (Dark Bronze) and #00824B (Philippine Green) along with #4B0082 create a stunning and beautiful triadic palette with the maximum variation in hue and, therefore, offering the best possible contrast when taken together.
The tetradic palette of Indigo has four colors - #824B00 (Dark Bronze), #378200 (Metallic Green) and #003782 (Air Force Blue (USAF)) in addition to the base color (#4B0082). 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.
Indigo square color palette has #820A00 (Barn Red), #378200 (Metallic Green) and #007882 (Teal). 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.
Indigo Color Rainbow Palette
Our Indigo 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.