Color

#053fbd

#053fbd
hex#053fbd
rgbrgb(5, 63, 189)
hslhsl(221, 95%, 38%)
oklchoklch(0.431 0.204 262.8)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0726

Colors that go with #053fbd

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 →

#bd8305

#059bbd · #2705bd

#bd053f · #3fbd05

Split-complementary

Open in tool →

#bd2705 · #9bbd05

#bd059b · #bd8305 · #05bd27

Contrast

#053fbd as textRatioAAAA largeAAAFix
Aaon white
8.56:1passpasspassPasses AAA — no fix needed.
Aaon black
2.45:1failfailfail
  • AA: use #296bfa as the text (4.58:1)
  • AAA: use #6594fb as the text (7.18:1)
  • AA: or shift the background to #bdbdbd (4.56:1)
  • AAA: or shift the background to #ebebeb (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #053fbd as the background.

Brands using this color

Fonts for this mood

#053fbd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #053fbd
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 #053fbd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/053fbd-9ca4c4-df6b4e-211f2d-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