Color
#517d8a
#517d8argb(81, 125, 138)hsl(194, 26%, 43%)oklch(0.563 0.052 218.4)Colors that go with #517d8a
Charcoal, Sienna and Champagne 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 text near-black for #517d8a: softer than #000 and cool enough to feel like part of the same palette.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #517d8a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Champagne #f7e7ce
shipped6 real palettes, including Forest Floor and Midnight Luxe put Champagne beside #517d8a, as that palette's text colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #517d8a: 6 real palettes, including Ink & Paper and Fintech Trust, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #517d8a: 7 real palettes, including Riverbed and Wellness, as the accent.
Crimson #dc143c
shippedCrimson is paired with #517d8a in 11 real palettes, including Retro Pop and Redfin's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #517d8a: 12 real palettes, including Campus and Discover's brand system, as the lead colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #517d8a in 5 real palettes, including Sapphire & Gold and Mid-Century, as the supporting colour.
Real palettes that use #517d8a
Tints & shades
Harmonies
Contrast
| #517d8a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.52:1 | pass | pass | fail |
|
Aaon black | 4.65:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #517d8a 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 #517d8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/517d8a-9cb6c4-df4e72-1f242d-e9f1ef?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