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
#852ccergb(133, 44, 206)hsl(273, 65%, 49%)oklch(0.512 0.23 303.9)Denim, Olive Green 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.
Designers have shipped Denim with #852cce: 4 real palettes, including Linkedin's brand system and Peacock, as the lead colour.
Olive Green sits directly opposite #852cce on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sea Green is a split-complement of #852cce: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal is the text near-black for #852cce: softer than #000 and cool enough to feel like part of the same palette.
Designers have shipped Deep Sky Blue with #852cce: 3 real palettes, including Render's brand system and Kraken's brand system, as the supporting colour.
Royal Blue is #852cce's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Taupe is paired with #852cce in 3 real palettes, including Superhuman's brand system and Datadog's brand system, as the lead colour.
Teal completes a triad with #852cce — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
| #852cce as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.46:1 | pass | pass | fail |
|
Aaon black | 3.25:1 | 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 #852cce 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.
#852cce 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 #852cce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/852cce-b79cc4-c4cb62-2d1f2d-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