Color
#b31dcd
#b31dcdrgb(179, 29, 205)hsl(291, 75%, 46%)oklch(0.564 0.254 320.8)Colors that go with #b31dcd
Forest Green, Charcoal and Dark Cyan 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.
Forest Green #228b22
complementaryForest Green sits directly opposite #b31dcd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #b31dcd: softer than #000 and cool enough to feel like part of the same palette.
Dark Cyan #008b8b
triadicshippedDark Cyan completes a triad with #b31dcd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Olive Green #808000
split-complementOlive Green is a split-complement of #b31dcd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sea Green #2e8b57
split-complementSea Green is a split-complement of #b31dcd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #b31dcd in two real palettes: Gemstone and The Ordinary's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #b31dcd in two real palettes: Hasbro's brand system and Peacock, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Medium Violet Red #c71585
analogousMedium Violet Red is #b31dcd's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Real palettes that use #b31dcd
Tints & shades
Harmonies
Contrast
| #b31dcd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.28:1 | pass | pass | fail |
|
Aaon black | 3.97:1 | 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 #b31dcd as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#b31dcd 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 #b31dcd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/b31dcd-bf9fc1-a4cb62-2d1f29-ece9f1?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