Color

#0505ff

#0505ff
hex#0505ff
rgbrgb(5, 5, 255)
hslhsl(240, 100%, 51%)
oklchoklch(0.454 0.312 264.4)
Closest name: blue (#0000ff)Relative luminance 0.0736

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#ffff05

#0582ff · #8205ff

#ff0505 · #05ff05

Split-complementary

Open in tool →

#ff8205 · #82ff05

#ff0582 · #ffff05 · #05ff82

Contrast

#0505ff as textRatioAAAA largeAAAFix
Aaon white
8.49:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #6161ff as the text (4.66:1)
  • AAA: use #8a8aff as the text (7.16:1)
  • AA: or shift the background to #bdbdbd (4.52:1)
  • AAA: or shift the background to #ebebeb (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0505ff as the background.

Brands using this color

Fonts for this mood

#0505ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0505ff
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0505ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0505ff-a19cc4-df994e-251f2d-e9edf1?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