Color

#2b5ea6

#2b5ea6
hex#2b5ea6
rgbrgb(43, 94, 166)
hslhsl(215, 59%, 41%)
oklchoklch(0.485 0.128 257.6)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1127

Colors that go with #2b5ea6

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 →

#a6732b

#2b9ca6 · #352ba6

#a62b5e · #5ea62b

Split-complementary

Open in tool →

#a6352b · #9ca62b

#a62b9c · #a6732b · #2ba635

Contrast

#2b5ea6 as textRatioAAAA largeAAAFix
Aaon white
6.45:1passpassfail
  • AAA: use #28579a as the text (7.19:1)
Aaon black
3.25:1failpassfail
  • AA: use #3876cc as the text (4.63:1)
  • AAA: use #6997d8 as the text (7.02:1)
  • AA: or shift the background to #d9d9d9 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b5ea6 as the background.

Brands using this color

Fonts for this mood

#2b5ea6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b5ea6
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 #2b5ea6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b5ea6-9ca8c4-df5d4e-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