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
#841cd9rgb(132, 28, 217)hsl(273, 77%, 48%)oklch(0.509 0.252 302)Denim, Olive Green and Charcoal 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 #841cd9: 4 real palettes, including Linkedin's brand system and Peacock, as the lead colour.
Olive Green sits directly opposite #841cd9 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal is the text near-black for #841cd9: softer than #000 and cool enough to feel like part of the same palette.
Designers have shipped Deep Sky Blue with #841cd9: 3 real palettes, including Render's brand system and Kraken's brand system, as the supporting colour.
Medium Slate Blue shows up next to #841cd9 in 3 real palettes, including ClickUp's brand system and monday.com's brand system, as the supporting colour.
Royal Blue is #841cd9'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 #841cd9 in 3 real palettes, including Superhuman's brand system and Datadog's brand system, as the lead colour.
Teal completes a triad with #841cd9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
| #841cd9 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.67:1 | pass | pass | fail |
|
Aaon black | 3.15:1 | 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 #841cd9 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.
#841cd9 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 #841cd9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/841cd9-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