Color

#051bc2

#051bc2
hex#051bc2
rgbrgb(5, 27, 194)
hslhsl(233, 95%, 39%)
oklchoklch(0.386 0.243 264.8)
Closest name: mediumblue (#0000cd)Relative luminance 0.0471

Colors that go with #051bc2

Charcoal, Crimson and Cornflower 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 →

#c2ac05

#0579c2 · #4d05c2

#c2051b · #1bc205

Split-complementary

Open in tool →

#c24d05 · #79c205

#c20579 · #c2ac05 · #05c24d

Contrast

#051bc2 as textRatioAAAA largeAAAFix
Aaon white
10.81:1passpasspassPasses AAA — no fix needed.
Aaon black
1.94:1failfailfail
  • AA: use #5165fb as the text (4.6:1)
  • AAA: use #7e8cfc as the text (7.04:1)
  • AA: or shift the background to #a8a8a8 (4.55:1)
  • AAA: or shift the background to #d1d1d1 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #051bc2 as the background.

Brands using this color

Fonts for this mood

#051bc2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #051bc2
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 #051bc2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/051bc2-9c9cc4-df884e-241f2d-e9eef1?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