Color
#511f56
#511f56rgb(81, 31, 86)hsl(295, 47%, 23%)oklch(0.338 0.108 323.9)Colors that go with #511f56
Sea Green, Blue and Cadet 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.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #511f56 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped5 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #511f56, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #511f56: 4 real palettes, including Open House and SoFi's brand system, as the supporting colour.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #511f56: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #511f56 in 7 real palettes, including Lenovo's brand system and Marvel's brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #511f56: 4 real palettes, including Kraken's brand system and Vimeo's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #511f56: 9 real palettes, including Hinge's brand system and Heinz's brand system, as the accent.
Midnight Blue #191970
shipped6 real palettes, including Tide Pool and Volkswagen's brand system put Midnight Blue beside #511f56, as that palette's text colour.
Real palettes that use #511f56
Tints & shades
Harmonies
Contrast
| #511f56 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.5:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.68:1 | 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 #511f56 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
#511f56 reads as cool, 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 #511f56 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/511f56-c19fbf-9dcb62-2d1f28-ede9f1?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