Color

#0183df

#0183df
hex#0183df
rgbrgb(1, 131, 223)
hslhsl(205, 99%, 44%)
oklchoklch(0.6 0.168 249.7)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2157

Colors that go with #0183df

Charcoal, Crimson and Copper 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 →

#df5e01

#01dfcd · #0114df

#df0183 · #83df01

Split-complementary

Open in tool →

#df0114 · #dfcd01

#cd01df · #df5e01 · #14df01

Contrast

#0183df as textRatioAAAA largeAAAFix
Aaon white
3.95:1failpassfail
  • AA: use #0177cb as the text (4.66:1)
  • AAA: use #015998 as the text (7.28:1)
  • AA: or shift the background to #171717 (4.54:1)
Aaon black
5.31:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0183df as the background.

Brands using this color

Fonts for this mood

#0183df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0183df
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 #0183df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0183df-9cafc4-df4e58-1f212d-e9f1f0?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