Color
#556d77
#556d77rgb(85, 109, 119)hsl(198, 17%, 40%)oklch(0.519 0.032 225.2)Colors that go with #556d77
Charcoal, Sienna and Champagne 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 #556d77: softer than #000 and cool enough to feel like part of the same palette.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #556d77 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Champagne #f7e7ce
shipped5 real palettes, including BrandSweets's brand system and Forest Floor put Champagne beside #556d77.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #556d77: 5 real palettes, including Ink & Paper and Fintech Trust, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #556d77: 6 real palettes, including Riverbed and Desert Road, as the accent.
Crimson #dc143c
shippedCrimson is paired with #556d77 in 8 real palettes, including Retro Pop and Gemstone, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #556d77: 11 real palettes, including Campus and The New York Times's brand system, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #556d77: 4 real palettes, including Newsprint and Wendy's's brand system, as the lead colour.
Real palettes that use #556d77
Tints & shades
Harmonies
Contrast
| #556d77 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.47:1 | pass | pass | fail |
|
Aaon black | 3.84:1 | 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 #556d77 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 #556d77 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/556d77-9cb3c4-df4e69-1f232d-e9f1f0?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