Color

#2b78bf

#2b78bf
hex#2b78bf
rgbrgb(43, 120, 191)
hslhsl(209, 63%, 46%)
oklchoklch(0.561 0.133 250.1)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1771

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bf732b

#2bbfbd · #2b2ebf

#bf2b78 · #78bf2b

Split-complementary

Open in tool →

#bf2b2e · #bfbd2b

#bd2bbf · #bf732b · #2ebf2b

Contrast

#2b78bf as textRatioAAAA largeAAAFix
Aaon white
4.62:1passpassfail
  • AAA: use #215b91 as the text (7.07:1)
Aaon black
4.54:1passpassfail
  • AAA: use #599bd9 as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b78bf as the background.

Brands using this color

Fonts for this mood

#2b78bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b78bf
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 #2b78bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b78bf-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