Color

#2b5ec5

#2b5ec5
hex#2b5ec5
rgbrgb(43, 94, 197)
hslhsl(220, 64%, 47%)
oklchoklch(0.508 0.17 262.3)
Closest name: Denim (#1560bd)Relative luminance 0.1255

Colors that go with #2b5ec5

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 →

#c5912b

#2babc5 · #452bc5

#c52b5e · #5ec52b

Split-complementary

Open in tool →

#c5452b · #abc52b

#c52bab · #c5912b · #2bc545

Contrast

#2b5ec5 as textRatioAAAA largeAAAFix
Aaon white
5.98:1passpassfail
  • AAA: use #2754b0 as the text (7.04:1)
Aaon black
3.51:1failpassfail
  • AA: use #3f71d5 as the text (4.53:1)
  • AAA: use #7196e0 as the text (7.14:1)
  • AA: or shift the background to #e0e0e0 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b5ec5 as the background.

Brands using this color

Fonts for this mood

#2b5ec5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b5ec5
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 #2b5ec5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b5ec5-9ca5c4-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