Color

#2b5dbf

#2b5dbf
hex#2b5dbf
rgbrgb(43, 93, 191)
hslhsl(220, 63%, 46%)
oklchoklch(0.501 0.164 262)
Closest name: Denim (#1560bd)Relative luminance 0.121

Colors that go with #2b5dbf

Charcoal, Sea Green and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bf8e2b

#2ba7bf · #442bbf

#bf2b5d · #5dbf2b

Split-complementary

Open in tool →

#bf442b · #a7bf2b

#bf2ba7 · #bf8e2b · #2bbf44

Contrast

#2b5dbf as textRatioAAAA largeAAAFix
Aaon white
6.14:1passpassfail
  • AAA: use #2753aa as the text (7.23:1)
Aaon black
3.42:1failpassfail
  • AA: use #4071d4 as the text (4.53:1)
  • AAA: use #7296df as the text (7.14:1)
  • AA: or shift the background to #dedede (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b5dbf as the background.

Brands using this color

Fonts for this mood

#2b5dbf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b5dbf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

analyze #2b5dbf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b5dbf-9ca5c4-df694e-211f2d-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