Color
#551b4b
#551b4brgb(85, 27, 75)hsl(310, 52%, 22%)oklch(0.332 0.106 335.1)Colors that go with #551b4b
Sea Green, 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.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #551b4b 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 #551b4b, as the accent.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #551b4b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Copper #b87333
shippedDesigners have shipped Copper with #551b4b: 5 real palettes, including Bramble and Notion's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #551b4b in 8 real palettes, including Tim Hortons's brand system and Lenovo's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #551b4b: 9 real palettes, including Hinge's brand system and Heinz's brand system, as the accent.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #551b4b: 6 real palettes, including Macaron and Sorbet, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #551b4b in 4 real palettes, including Docker's brand system and Rotten Tomatoes's brand system, as the supporting colour.
Real palettes that use #551b4b
Tints & shades
Harmonies
Contrast
| #551b4b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.77:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.64:1 | 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 #551b4b 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
#551b4b reads as warm, dark, luxury. 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 #551b4b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/551b4b-c19fb7-83cb62-2d1f25-efe9f1?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