Color
#640aff
#640affrgb(100, 10, 255)hsl(262, 100%, 52%)oklch(0.505 0.292 284.6)Colors that go with #640aff
Royal Blue, Charcoal and Olive Green 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.
Royal Blue #4169e1
analogousshippedRoyal Blue is #640aff's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #640aff: softer than #000 and cool enough to feel like part of the same palette.
Olive Green #808000
complementaryOlive Green sits directly opposite #640aff on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #640aff: 3 real palettes, including Zillow's brand system and Nokia's brand system, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #640aff: 3 real palettes, including Qualcomm's brand system and Roblox's brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #640aff: 3 real palettes, including Render's brand system and Warp's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #640aff: 3 real palettes, including Pixar's brand system and Linkedin's brand system, as the supporting colour.
Medium Slate Blue #7b68ee
shippedMedium Slate Blue shows up next to #640aff in 3 real palettes, including ClickUp's brand system and Stripe's brand system, as the supporting colour.
Real palettes that use #640aff
Tints & shades
Harmonies
Contrast
| #640aff as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.93:1 | pass | pass | fail |
|
Aaon black | 3.03:1 | 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 #640aff 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
#640aff 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 #640aff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/640aff-af9cc4-dfce4e-2a1f2d-e9eaf1?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