Color
#6645f7
#6645f7rgb(102, 69, 247)hsl(251, 92%, 62%)oklch(0.543 0.248 282.8)Colors that go with #6645f7
Charcoal, Denim and Sea 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #6645f7: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
analogousshippedDenim is #6645f7's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #6645f7 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber #ffbf00
shippedAmber is paired with #6645f7 in 5 real palettes, including Mastodon hosted on mastodon.social's brand system and Walmart's brand system, as the accent.
Blue #0000ff
shipped6 real palettes, including Signal's brand system and Dropbox's brand system put Blue beside #6645f7, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #6645f7: 8 real palettes, including Nivea's brand system and Nokia's brand system, as the lead colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #6645f7: 6 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 #6645f7 in 9 real palettes, including Toyota's brand system and Coinbase's brand system, as the supporting colour.
Real palettes that use #6645f7
Tints & shades
Harmonies
Contrast
| #6645f7 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.59:1 | pass | pass | fail |
|
Aaon black | 3.76:1 | 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 #6645f7 as the background.
Brands using this color
Fonts for this mood
#6645f7 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 #6645f7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/6645f7-a89cc4-dfb34e-281f2d-e9ecf1?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