Color

#317dbf

#317dbf
hex#317dbf
rgbrgb(49, 125, 191)
hslhsl(208, 59%, 47%)
oklchoklch(0.574 0.126 248.3)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1908

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bf7331

#31bfba · #3136bf

#bf317d · #7dbf31

Split-complementary

Open in tool →

#bf3136 · #bfba31

#ba31bf · #bf7331 · #36bf31

Contrast

#317dbf as textRatioAAAA largeAAAFix
Aaon white
4.36:1failpassfail
  • AA: use #307abb as the text (4.54:1)
  • AAA: use #245a8a as the text (7.23:1)
  • AA: or shift the background to #0a0a0a (4.54:1)
Aaon black
4.82:1passpassfail
  • AAA: use #599bd4 as the text (7.06:1)

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

Brands using this color

Fonts for this mood

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

mcpConnect your agent — build around #317dbf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #317dbf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/317dbf-9cadc4-df4e51-1f212d-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