Indigo is a color name with unusual depth — it's not just blue, it's the specific blue that sits between blue and violet on the spectrum, traditionally produced from the indigo plant, historically significant as a trade commodity, and given added mystique by its role as one of the colors in the rainbow mnemonic (Roy G. Biv). At rank 1302 in the pet registry, it skews male and tends to appear on dogs with dark, blue-tinted or gray coats.
Color Names on Pets
Indigo works as a pet name for exactly the reason other color names do: it's visually descriptive, phonetically pleasant, and slightly more specific than generic options. Unlike Blue, which is common enough to be almost generic in pet naming, Indigo is specific enough to feel considered. Weimaraners and blue Great Danes whose coats genuinely have a blue-gray cast are the natural candidates. The human name is explored at /names/indigo.
Sound and Feel
Three syllables with a falling pattern: IN-di-go. The -go ending is clean and slightly open, which gives the name a forward quality. It compresses naturally to Indi in daily use, which is soft and friendly without losing the original name's specificity. Compare Blue or Violet for the same color-name register at different points on the spectrum.
The Counter-Reading
Indigo is a name that works best when the pet actually has the appropriate coloring. On a golden-coated dog, it's a slightly puzzling choice that requires explanation. On a blue-gray breed, it's perfect and self-evident. Match the name to the coat and you have a clean, sophisticated pick that ages well.