Color
#583d71
#583d71rgb(88, 61, 113)hsl(271, 30%, 34%)oklch(0.414 0.089 306.8)Colors that go with #583d71
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 #583d71 in 4 real palettes, including Lenovo's brand system and Marvel's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #583d71 in 6 real palettes, including Hinge's brand system and HP's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #583d71 in 7 real palettes, including Microsoft's brand system and First Snow, as the accent — a combination designers have actually shipped, not a computed rotation.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #583d71 in 6 real palettes, including First Snow and Macaron, as the accent — a combination designers have actually shipped, not a computed rotation.
Royal Blue #4169e1
shippedRoyal Blue is paired with #583d71 in 8 real palettes, including Console Light and Zoom's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Steel Blue #4682b4
shippedSteel Blue is paired with #583d71 in 5 real palettes, including Auth0's brand system and Capital One's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
complementaryDark Olive Green sits directly opposite #583d71 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #583d71: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #583d71
Tints & shades
Harmonies
Contrast
| #583d71 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.05:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.32:1 | 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 #583d71 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 #583d71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/583d71-b59cc4-c7cb62-2c1f2d-eae9f1?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