Color
#7b51db
#7b51dbrgb(123, 81, 219)hsl(258, 66%, 59%)oklch(0.555 0.201 292.7)Colors that go with #7b51db
Charcoal, Cornflower Blue and Crimson 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #7b51db: softer than #000 and cool enough to feel like part of the same palette.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #7b51db: 4 real palettes, including Mastodon hosted on mastodon.social's brand system and Roblox's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #7b51db in 6 real palettes, including Gemstone and Marvel's brand system, as the accent.
Light Sky Blue #87cefa
shippedLight Sky Blue is paired with #7b51db in 4 real palettes, including Calm's brand system and Sentry's brand system, as the supporting colour.
Midnight Blue #191970
shipped6 real palettes, including Lavender Haze and Discord's brand system put Midnight Blue beside #7b51db, as that palette's text colour.
Red #ff0000
shippedRed is paired with #7b51db in 4 real palettes, including Twitch's brand system and Rotten Tomatoes's brand system, as the accent.
Sea Green #2e8b57
shippedSea Green shows up next to #7b51db in 4 real palettes, including Next.js's brand system and Jack Daniel's's brand system, as the supporting colour.
Olive Green #808000
complementaryOlive Green sits directly opposite #7b51db on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #7b51db
Tints & shades
Harmonies
Contrast
| #7b51db as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.2:1 | pass | pass | fail |
|
Aaon black | 4.04:1 | 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 #7b51db 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
#7b51db 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 #7b51db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/7b51db-ad9cc4-dfc44e-291f2d-e9ebf1?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