Color
#57666b
#57666brgb(87, 102, 107)hsl(195, 10%, 38%)oklch(0.499 0.02 219.9)Colors that go with #57666b
Charcoal, Champagne and Copper 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 that reads cleanly against #57666b without the hard edge of pure #000.
Champagne #f7e7ce
shipped5 real palettes, including BrandSweets's brand system and Darkroom put Champagne beside #57666b.
Copper #b87333
shippedDesigners have shipped Copper with #57666b: 6 real palettes, including Desert Road and Clay & Linen, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #57666b in 8 real palettes, including Gemstone and Retro Pop, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #57666b: 10 real palettes, including Campus and HP's brand system, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #57666b: 5 real palettes, including Newsprint and Fireside, as the lead colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #57666b in 5 real palettes, including Mid-Century and Open House, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #57666b in 4 real palettes, including Undergrowth and Indigo SaaS, as the lead colour.
Real palettes that use #57666b
Tints & shades
Harmonies
Contrast
| #57666b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.97:1 | pass | pass | fail |
|
Aaon black | 3.52:1 | 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 #57666b as the background.
Brands using this color
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 #57666b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/57666b-9cb5c4-df4e70-1f242d-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