Color
#515d67
#515d67rgb(81, 93, 103)hsl(207, 12%, 36%)oklch(0.472 0.022 243.3)Colors that go with #515d67
Cadet Blue, 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.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #515d67: 4 real palettes, including Dusk and Open House, as the supporting colour.
Champagne #f7e7ce
shipped5 real palettes, including Darkroom and BrandSweets's brand system put Champagne beside #515d67, as the surface under it.
Copper #b87333
shippedDesigners have shipped Copper with #515d67: 5 real palettes, including Desert Road and Dusk, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #515d67 in 6 real palettes, including Codecademy's brand system and Gemstone, as the accent.
Dark Goldenrod #b8860b
shipped4 real palettes, including Cider and Puma's brand system put Dark Goldenrod beside #515d67, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #515d67: 7 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 #515d67: 4 real palettes, including Fireside and Newsprint, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #515d67 was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #515d67
Tints & shades
Harmonies
Contrast
| #515d67 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 #515d67 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 #515d67 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/515d67-9cadc4-df4e53-1f212d-e9f1f1?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