Color

#186bfb

#186bfb
hex#186bfb
rgbrgb(24, 107, 251)
hslhsl(218, 97%, 54%)
oklchoklch(0.572 0.228 261.1)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1767

Colors that go with #186bfb

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 →

#fba818

#18ddfb · #3618fb

#fb186b · #6bfb18

Split-complementary

Open in tool →

#fb3618 · #ddfb18

#fb18dd · #fba818 · #18fb36

Contrast

#186bfb as textRatioAAAA largeAAAFix
Aaon white
4.63:1passpassfail
  • AAA: use #034ece as the text (7.04:1)
Aaon black
4.53:1passpassfail
  • AAA: use #5995fc as the text (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 #186bfb as the background.

Brands using this color

Fonts for this mood

#186bfb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #186bfb
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 #186bfb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/186bfb-9ca6c4-df644e-201f2d-e9f0f1?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