In a RGB color space, hex #153B5E (known as Indigo (Rainbow) color) is composed of 8% red, 23% green and 37% blue. Whereas in a CMYK color space, it is composed of 78% cyan, 37% magenta, 0% yellow and 63% black. Scroll down to get more color shades, tone and matching colors with this color.
| Color Name* | Indigo (Rainbow) |
| Hex | #153B5E |
| RGB | 21, 59, 94 |
| CMYK* | 78, 37, 0, 63 |
| HSL* | 209, 63%, 23% |
| Pantone* | 534 C (#1B365D) |
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