Color
#513d71
#513d71rgb(81, 61, 113)hsl(263, 30%, 34%)oklch(0.406 0.087 300.3)Colors that go with #513d71
Crimson, Denim and Midnight 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
shippedCrimson is paired with #513d71 in 6 real palettes, including Codecademy's brand system and Marvel's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #513d71: 7 real palettes, including Hinge's brand system and HP's brand system, as the accent.
Midnight Blue #191970
shipped9 real palettes, including Microsoft's brand system and First Snow put Midnight Blue beside #513d71, as the accent.
Orange Red #ff4500
shippedOrange Red is paired with #513d71 in 4 real palettes, including Tumblr's brand system and Tide's brand system, as the accent.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #513d71: 6 real palettes, including First Snow and Macaron, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #513d71 in 8 real palettes, including Zoom's brand system and Console Light, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #513d71: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Dark Olive Green #556b2f
complementaryDark Olive Green sits directly opposite #513d71 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #513d71
Tints & shades
Harmonies
Contrast
| #513d71 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.31:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.26:1 | 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 #513d71 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #513d71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/513d71-b09cc4-dfd04e-2b1f2d-e9eaf1?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