Color
#664d6f
#664d6frgb(102, 77, 111)hsl(284, 18%, 37%)oklch(0.46 0.062 316.9)Colors that go with #664d6f
Charcoal, Sea Green and Copper 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 #664d6f: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #664d6f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
shippedDesigners have shipped Copper with #664d6f: 4 real palettes, including Dusk and Desert Road, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #664d6f: 7 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #664d6f in 4 real palettes, including Console Light and Fintech Trust, as the accent.
Midnight Blue #191970
shipped6 real palettes, including Lufthansa's brand system and First Snow put Midnight Blue beside #664d6f, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #664d6f in 7 real palettes, including Console Light and Stripe's brand system, as the lead colour.
Sage Green #9caf88
shippedDesigners have shipped Sage Green with #664d6f: 5 real palettes, including Oatmeal and Darkroom, as the supporting colour.
Real palettes that use #664d6f
Tints & shades
Harmonies
Contrast
| #664d6f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.35:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.86:1 | 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 #664d6f 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 #664d6f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/664d6f-bc9fc1-b1cb62-2d1f2b-ebe9f1?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