Color
#51103e
#51103ergb(81, 16, 62)hsl(318, 67%, 19%)oklch(0.306 0.109 342.2)Colors that go with #51103e
Crimson, Sea Green and Blue 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.
Crimson #dc143c
analogousshippedCrimson is #51103e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #51103e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped6 real palettes, including Tim Hortons's brand system and Sketch's brand system put Blue beside #51103e, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #51103e: 5 real palettes, including SoFi's brand system and Clean Beauty, as the supporting colour.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #51103e: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Copper #b87333
shippedDesigners have shipped Copper with #51103e: 9 real palettes, including Bramble and Chipotle's brand system, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #51103e in 5 real palettes, including Oatmeal and Cider, as the lead colour.
Real palettes that use #51103e
Tints & shades
Harmonies
Contrast
| #51103e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.06:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.49:1 | 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 #51103e 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
#51103e reads as warm, 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 #51103e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51103e-c19fb3-75cb62-2d1f23-f0e9f1?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