Color
#663c68
#663c68rgb(102, 60, 104)hsl(297, 27%, 32%)oklch(0.424 0.087 325.4)Colors that go with #663c68
Sea Green, Denim and Powder 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 #663c68 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Denim #1560bd
shippedDesigners have shipped Denim with #663c68: 5 real palettes, including Hinge's brand system and HP's brand system, as the accent.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #663c68: 4 real palettes, including Nursery and First Snow, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #663c68 in 6 real palettes, including Console Light and GitHub's brand system, as the lead colour.
Taupe #483c32
shippedTaupe is paired with #663c68 in 9 real palettes, including Blush and Sepia Mono, as that palette's text colour.
Teal #008080
split-complementshippedTeal is a split-complement of #663c68: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Champagne #f7e7ce
shipped3 real palettes, including Bramble and Darkroom put Champagne beside #663c68, as the text colour against it.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #663c68: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #663c68
Tints & shades
Harmonies
Contrast
| #663c68 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.71:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.41:1 | 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 #663c68 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 #663c68 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/663c68-c19fbe-9acb62-2d1f28-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