Color
#647f87
#647f87rgb(100, 127, 135)hsl(194, 15%, 46%)oklch(0.578 0.033 217.8)Colors that go with #647f87
Charcoal, Copper and Sienna 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 #647f87: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
split-complementshippedCopper is a split-complement of #647f87: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #647f87 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Champagne #f7e7ce
shipped6 real palettes, including Forest Floor and Midnight Luxe put Champagne beside #647f87, as that palette's text colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #647f87: 5 real palettes, including Ink & Paper and Fintech Trust, as the accent.
Crimson #dc143c
shippedCrimson is paired with #647f87 in 10 real palettes, including Retro Pop and Redfin's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #647f87: 12 real palettes, including Campus and Peacock, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #647f87: 4 real palettes, including Newsprint and Wendy's's brand system, as the lead colour.
Real palettes that use #647f87
Tints & shades
Harmonies
Contrast
| #647f87 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.26:1 | fail | pass | fail | |
Aaon black | 4.93:1 | pass | 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 #647f87 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 #647f87 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/647f87-9cb6c4-df4e72-1f242d-e9f1ef?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