Color

#317581

#317581
hex#317581
rgbrgb(49, 117, 129)
hslhsl(189, 45%, 35%)
oklchoklch(0.524 0.07 210.9)
Closest name: Calypso (#3d7188)Relative luminance 0.1496

Colors that go with #317581

Charcoal, Rust and Amber 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.

Real palettes that use #317581

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#813d31

#318165 · #314d81

#813175 · #758131

Split-complementary

Open in tool →

#81314d · #816531

#653181 · #813d31 · #4d8131

Contrast

#317581 as textRatioAAAA largeAAAFix
Aaon white
5.26:1passpassfail
  • AAA: use #275e68 as the text (7.27:1)
Aaon black
3.99:1failpassfail
  • AA: use #357f8d as the text (4.57:1)
  • AAA: use #45a4b5 as the text (7.23:1)
  • AA: or shift the background to #f0f0f0 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #317581 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#317581 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #317581
live endpoint

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.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #317581 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/317581-a2b7be-df4e7e-1f252d-e9f1ee?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md