Color

#317fbf

#317fbf
hex#317fbf
rgbrgb(49, 127, 191)
hslhsl(207, 59%, 47%)
oklchoklch(0.579 0.124 247)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1959

Colors that go with #317fbf

Charcoal, Crimson 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bf7131

#31bfb7 · #3138bf

#bf317f · #7fbf31

Split-complementary

Open in tool →

#bf3138 · #bfb731

#b731bf · #bf7131 · #38bf31

Contrast

#317fbf as textRatioAAAA largeAAAFix
Aaon white
4.27:1failpassfail
  • AA: use #2f7ab6 as the text (4.58:1)
  • AAA: use #245c8a as the text (7.06:1)
  • AA: or shift the background to #0d0d0d (4.55:1)
Aaon black
4.92:1passpassfail
  • AAA: use #599dd4 as the text (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #317fbf 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

#317fbf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #317fbf
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 #317fbf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/317fbf-9cadc4-df4e53-1f212d-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