Gemstone
Open in tool →Emerald, amethyst and ruby on velvet-black — the jewel-tone trio; the surface must be dark or the stones go plastic.
Color
#8528ccrgb(133, 40, 204)hsl(274, 67%, 48%)oklch(0.507 0.232 304.7)Olive Green, Teal and Sea Green 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.
Olive Green sits directly opposite #8528cc on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Teal completes a triad with #8528cc — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sea Green is a split-complement of #8528cc: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal is the text near-black for #8528cc: softer than #000 and cool enough to feel like part of the same palette.
Denim is paired with #8528cc in two real palettes: Peacock and Slack's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Sienna completes a triad with #8528cc — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Coral is paired with #8528cc in Dusk Gradient, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Crimson is paired with #8528cc in Gemstone, as the accent — a combination designers have actually shipped, not a computed rotation.
| #8528cc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.62:1 | pass | pass | fail |
|
Aaon black | 3.17:1 | fail | 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 #8528cc as the background.
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Emerald, amethyst and ruby on velvet-black — the jewel-tone trio; the surface must be dark or the stones go plastic.
#8528cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
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 #8528cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/8528cc-b79cc4-c2cb62-2d1f2d-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