Color
#645289
#645289rgb(100, 82, 137)hsl(260, 25%, 43%)oklch(0.48 0.088 298.1)Colors that go with #645289
Charcoal, Sea Green 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 #645289: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
split-complementshippedSea Green is a split-complement of #645289: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shipped4 real palettes, including Pixar's brand system and Tesco's brand system put Blue beside #645289, as the accent.
Crimson #dc143c
shippedCrimson is paired with #645289 in 11 real palettes, including Wells Fargo's brand system and Marvel's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #645289: 12 real palettes, including HP's brand system and The New York Times's brand system, as the accent.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #645289: 4 real palettes, including Campbell's's brand system and Datadog's brand system, as the supporting colour.
Midnight Blue #191970
shipped12 real palettes, including Lufthansa's brand system and Fintech Trust put Midnight Blue beside #645289, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #645289 in 11 real palettes, including Stripe's brand system and GitHub's brand system, as the accent.
Real palettes that use #645289
Tints & shades
Harmonies
Contrast
| #645289 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.75:1 | pass | pass | fail |
|
Aaon black | 3.11:1 | 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 #645289 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #645289 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/645289-ae9cc4-dfc94e-2a1f2d-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