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
#751dcdrgb(117, 29, 205)hsl(270, 75%, 46%)oklch(0.48 0.238 298.9)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 #751dcd 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 #751dcd — 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 #751dcd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal is the text near-black for #751dcd: softer than #000 and cool enough to feel like part of the same palette.
Denim is paired with #751dcd in two real palettes: Slack's brand system and Peacock, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Light Sea Green is paired with #751dcd in two real palettes: Circuit and Taco Bell's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Medium Slate Blue is paired with #751dcd in two real palettes: ClickUp's brand system and Stripe's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Taupe is paired with #751dcd in two real palettes: Datadog's brand system and Superhuman's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
| #751dcd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.46:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.81:1 | 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 #751dcd 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.
#751dcd 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 #751dcd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/751dcd-b59cc4-c9cb62-2c1f2d-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