Color
#b21bc5
#b21bc5rgb(178, 27, 197)hsl(293, 76%, 44%)oklch(0.556 0.249 322.7)Colors that go with #b21bc5
Forest Green, Teal 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.
Forest Green #228b22
complementaryForest Green sits directly opposite #b21bc5 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Teal #008080
split-complementshippedTeal is a split-complement of #b21bc5: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #b21bc5: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
shippedDesigners have shipped Denim with #b21bc5: 3 real palettes, including Hasbro's brand system and Peacock, as the supporting colour.
Olive Green #808000
split-complementOlive Green is a split-complement of #b21bc5: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #b21bc5 in two real palettes: Gemstone and The Ordinary's brand system, as the accent.
Medium Violet Red #c71585
analogousMedium Violet Red is #b21bc5's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Dark Cyan #008b8b
shippedDesigners have shipped Dark Cyan with #b21bc5: Peacock, as the lead colour.
Real palettes that use #b21bc5
Tints & shades
Harmonies
Contrast
| #b21bc5 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.45:1 | pass | pass | fail |
|
Aaon black | 3.86:1 | 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 #b21bc5 as the background.
Brands using this color
Fonts for this mood
#b21bc5 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 #b21bc5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/b21bc5-c19fc1-a1cb62-2d1f29-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