Color

#054bbd

#054bbd
hex#054bbd
rgbrgb(5, 75, 189)
hslhsl(217, 95%, 38%)
oklchoklch(0.453 0.19 261)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0874

Colors that go with #054bbd

Charcoal, Crimson and Steel Blue 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 →

#bd7605

#05a7bd · #1a05bd

#bd054b · #4bbd05

Split-complementary

Open in tool →

#bd1a05 · #a7bd05

#bd05a7 · #bd7605 · #05bd1a

Contrast

#054bbd as textRatioAAAA largeAAAFix
Aaon white
7.64:1passpasspassPasses AAA — no fix needed.
Aaon black
2.75:1failfailfail
  • AA: use #156df9 as the text (4.59:1)
  • AAA: use #5695fb as the text (7.09:1)
  • AA: or shift the background to #c7c7c7 (4.52:1)
  • AAA: or shift the background to #f5f5f5 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #054bbd as the background.

Brands using this color

Fonts for this mood

#054bbd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #054bbd
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 #054bbd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/054bbd-9ca7c4-df624e-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