Duke Blue Color – #00009c: Codes and Complete Breakdown
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This deep, saturated blue borrows the name of Duke University, whose colors trace to Trinity College’s team beating UNC 16–0 in 1888 while wearing a grayish blue chosen to echo Yale’s, honoring Yale-educated president John Franklin Crowell. Duke’s official navy is closer to #012169, so this brighter #00009c version pushes toward pure ultramarine and reads more electric than the campus original. Duke Blue color works when you want confidence with a bit of shout.

Duke Blue Color Shades
Complementary colors
Triadic colors
Tints or lighter colors
Darker colors
Analogous colors
Monochromatic colors
#00009c
Duke Blue Color Codes and Information
Complete breakdown of the color Duke Blue:
| Data Type | Values/Details |
|---|---|
| Hex | #00009c |
| RGB | rgb(0,0,156) |
| HSL | hsl(240,100%,30.6%) |
| CMYK | 100, 100, 0, 39 |
| HSV | 240, 100, 61 |
| RGB % | 0, 0, 61 |
| XYZ | 6, 2.4, 31.6 |
| LAB | 17.5, 54.9, -74.7 |
| Color Category | Dark |
| Color Family | Blue |
| Saturation | 100% |
| Temperature | Cool |
| Contrast Ratio Againt White (#ffffff) | 14.19 (passes WCAG AA) |
| Contrast Ratio Againt Black (#000000) | 1.48 (fails WCAG AA) |
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