Color

#315577

#315577
hex#315577
rgbrgb(49, 85, 119)
hslhsl(209, 42%, 33%)
oklchoklch(0.438 0.07 248.4)
Closest name: Assassin (#2d4f83)Relative luminance 0.0848

Colors that go with #315577

Sienna, Blue and Cadet Blue 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#775331

#317776 · #313277

#773155 · #557731

Split-complementary

Open in tool →

#773132 · #777631

#763177 · #775331 · #327731

Contrast

#315577 as textRatioAAAA largeAAAFix
Aaon white
7.79:1passpasspassPasses AAA — no fix needed.
Aaon black
2.7:1failfailfail
  • AA: use #467aaa as the text (4.62:1)
  • AAA: use #6e9ac4 as the text (7.08:1)
  • AA: or shift the background to #c7c7c7 (4.61:1)
  • AAA: or shift the background to #f5f5f5 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #315577 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

#315577 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #315577
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 #315577 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/315577-9cacc4-df4e4e-1f212d-e9f1f1?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