Color
#51102d
#51102drgb(81, 16, 45)hsl(333, 67%, 19%)oklch(0.298 0.099 358)Colors that go with #51102d
Charcoal, Sea Green and Steel 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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #51102d: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Sea Green #2e8b57
split-complementshippedSea Green is a split-complement of #51102d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Steel Blue #4682b4
triadicshippedSteel Blue completes a triad with #51102d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Teal #008080
complementaryshippedTeal sits directly opposite #51102d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #51102d in 5 real palettes, including McDonald's's brand system and Maple, as the lead colour.
Blue #0000ff
shipped8 real palettes, including Tim Hortons's brand system and Sketch's brand system put Blue beside #51102d, as the accent.
Blush Pink #e8b4b8
shipped4 real palettes, including Blush and Graphite Mono put Blush Pink beside #51102d, as the supporting colour.
Real palettes that use #51102d
Tints & shades
Harmonies
Contrast
| #51102d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.37:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.46:1 | 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 #51102d as the background.
Brands using this color
Fonts for this mood
#51102d 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 #51102d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51102d-c49ca9-62cb69-2d1f20-f1e9f0?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