Color
#643afd
#643afdrgb(100, 58, 253)hsl(253, 98%, 61%)oklch(0.534 0.265 282.6)Colors that go with #643afd
Charcoal, Denim and Blue 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 #643afd: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
analogousshippedDenim is #643afd's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped4 real palettes, including Signal's brand system and Dropbox's brand system put Blue beside #643afd, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #643afd: 7 real palettes, including Nokia's brand system and Nivea's brand system, as the lead colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #643afd: 4 real palettes, including Roblox's brand system and Mastodon hosted on mastodon.social's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #643afd in 6 real palettes, including Coinbase's brand system and Toyota's brand system.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #643afd: 5 real palettes, including Render's brand system and Calm's brand system, as the supporting colour.
Light Sky Blue #87cefa
shippedLight Sky Blue is paired with #643afd in 4 real palettes, including Calm's brand system and Telehealth, as the supporting colour.
Real palettes that use #643afd
Tints & shades
Harmonies
Contrast
| #643afd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.89:1 | pass | pass | fail |
|
Aaon black | 3.57:1 | 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 #643afd 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
#643afd 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 #643afd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/643afd-a99cc4-dfb84e-281f2d-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