Color
#15317e
#15317ergb(21, 49, 126)hsl(224, 71%, 29%)oklch(0.346 0.135 264.8)Colors that go with #15317e
Steel Blue, Blue and Charcoal lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Steel Blue #4682b4
analogousshippedSteel Blue is #15317e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shippedBlue is paired with #15317e in 4 real palettes, including Alaska Airlines's brand system and Procter & Gamble's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #15317e: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #15317e in 4 real palettes, including Casper Sleep's brand system and Nintendo's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #15317e in 11 real palettes, including Hasbro's brand system and Bank of America's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Royal Blue #4169e1
shippedRoyal Blue is paired with #15317e in 8 real palettes, including Discord's brand system and Confluent's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Sky Blue #87ceeb
shippedSky Blue is paired with #15317e in 4 real palettes, including Boeing's brand system and Harbour, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #15317e in 5 real palettes, including Ink & Paper and Bloomberg's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #15317e
Tints & shades
Harmonies
Contrast
| #15317e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 11.85:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.77:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15317e as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#15317e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #15317e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/15317e-9ca2c4-df724e-221f2d-e9eff1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md