Color

#2b4bbf

#2b4bbf
hex#2b4bbf
rgbrgb(43, 75, 191)
hslhsl(227, 63%, 46%)
oklchoklch(0.465 0.185 266.9)
Closest name: Denim (#2243b6)Relative luminance 0.0931

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bf9f2b

#2b95bf · #552bbf

#bf2b4b · #4bbf2b

Split-complementary

Open in tool →

#bf552b · #95bf2b

#bf2b95 · #bf9f2b · #2bbf55

Contrast

#2b4bbf as textRatioAAAA largeAAAFix
Aaon white
7.34:1passpasspassPasses AAA — no fix needed.
Aaon black
2.86:1failfailfail
  • AA: use #506ed7 as the text (4.55:1)
  • AAA: use #7e94e2 as the text (7.22:1)
  • AA: or shift the background to #cccccc (4.57:1)
  • AAA: or shift the background to #fafafa (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b4bbf 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

#2b4bbf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b4bbf
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 #2b4bbf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b4bbf-9ca0c4-df7a4e-221f2d-e9eff1?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