Color

#051df5

#051df5
hex#051df5
rgbrgb(5, 29, 245)
hslhsl(234, 96%, 49%)
oklchoklch(0.453 0.294 264.5)
Closest name: Blue Overdose (#0020ef)Relative luminance 0.075

Colors that go with #051df5

Charcoal, Crimson and Cobalt 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 →

#f5dd05

#0595f5 · #6505f5

#f5051d · #1df505

Split-complementary

Open in tool →

#f56505 · #95f505

#f50595 · #f5dd05 · #05f565

Contrast

#051df5 as textRatioAAAA largeAAAFix
Aaon white
8.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.5:1failfailfail
  • AA: use #5566fc as the text (4.69:1)
  • AAA: use #828efc as the text (7.22:1)
  • AA: or shift the background to #bfbfbf (4.57:1)
  • AAA: or shift the background to #ebebeb (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #051df5 as the background.

Brands using this color

Fonts for this mood

#051df5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #051df5
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 #051df5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/051df5-9d9cc4-df8a4e-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