Color

#2b4355

#2b4355
hex#2b4355
rgbrgb(43, 67, 85)
hslhsl(206, 33%, 25%)
oklchoklch(0.371 0.043 241.7)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0518

Tints & shades

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

Harmonies

Complementary

Open in tool →

#553d2b

#2b5552 · #2b2e55

#552b43 · #43552b

Split-complementary

Open in tool →

#552b2e · #55522b

#522b55 · #553d2b · #2e552b

Contrast

#2b4355 as textRatioAAAA largeAAAFix
Aaon white
10.31:1passpasspassPasses AAA — no fix needed.
Aaon black
2.04:1failfailfail
  • AA: use #4f7a9c as the text (4.6:1)
  • AAA: use #749bb9 as the text (7.13:1)
  • AA: or shift the background to #adadad (4.59:1)
  • AAA: or shift the background to #d6d6d6 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b4355 as the background.

Brands using this color

Fonts for this mood

#2b4355 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b4355
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 #2b4355 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b4355-9caec4-df4e56-1f212d-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