Color
#b581e9
#b581e9rgb(181, 129, 233)hsl(270, 70%, 71%)oklch(0.696 0.156 305.8)Colors that go with #b581e9
Medium Sea Green, Amber 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.
Medium Sea Green #3cb371
complementaryshippedMedium Sea Green sits directly opposite #b581e9 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #b581e9 in 3 real palettes, including Mastodon hosted on mastodon.social's brand system and Blueprint, as the accent.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #b581e9: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
shippedRoyal Blue is paired with #b581e9 in 3 real palettes, including Loom's brand system and Sephora's brand system, as the lead colour.
Light Sea Green #20b2aa
triadicshippedLight Sea Green completes a triad with #b581e9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Dark Goldenrod #b8860b
split-complementDark Goldenrod is a split-complement of #b581e9: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shippedTwo real palettes: Canva's brand system and Spotify's brand system put Blue beside #b581e9, as the accent.
Emerald Green #50c878
shippedEmerald Green is paired with #b581e9 in two real palettes: Obsidian's brand system and Supabase's brand system, as the accent.
Tints & shades
Harmonies
Contrast
| #b581e9 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.88:1 | fail | fail | fail | |
Aaon black | 7.28:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b581e9 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
#b581e9 reads as cool, vivid, light. 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 #b581e9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/b581e9-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