Color

#2561bb

#2561bb
hex#2561bb
rgbrgb(37, 97, 187)
hslhsl(216, 67%, 44%)
oklchoklch(0.505 0.155 258.8)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1253

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bb7f25

#25acbb · #3425bb

#bb2561 · #61bb25

Split-complementary

Open in tool →

#bb3425 · #acbb25

#bb25ac · #bb7f25 · #25bb34

Contrast

#2561bb as textRatioAAAA largeAAAFix
Aaon white
5.99:1passpassfail
  • AAA: use #2156a6 as the text (7.13:1)
Aaon black
3.51:1failpassfail
  • AA: use #3374d7 as the text (4.62:1)
  • AAA: use #6697e1 as the text (7.08:1)
  • AA: or shift the background to #e0e0e0 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2561bb as the background.

Brands using this color

Fonts for this mood

#2561bb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2561bb
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 #2561bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2561bb-9ca7c4-df5f4e-201f2d-e9f0f1?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