Color

#011bc1

#011bc1
hex#011bc1
rgbrgb(1, 27, 193)
hslhsl(232, 99%, 38%)
oklchoklch(0.384 0.242 264.3)
Closest name: mediumblue (#0000cd)Relative luminance 0.0464

Colors that go with #011bc1

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 →

#c1a701

#017ac1 · #4701c1

#c1011b · #1bc101

Split-complementary

Open in tool →

#c14701 · #7ac101

#c1017a · #c1a701 · #01c147

Contrast

#011bc1 as textRatioAAAA largeAAAFix
Aaon white
10.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.93:1failfailfail
  • AA: use #4d65fe as the text (4.61:1)
  • AAA: use #7b8dfe as the text (7.08:1)
  • AA: or shift the background to #a8a8a8 (4.58:1)
  • AAA: or shift the background to #d1d1d1 (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 #011bc1 as the background.

Brands using this color

Fonts for this mood

#011bc1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #011bc1
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 #011bc1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/011bc1-9c9dc4-df864e-231f2d-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