Color

#105cea

#105cea
hex#105cea
rgbrgb(16, 92, 234)
hslhsl(219, 87%, 49%)
oklchoklch(0.528 0.225 261.8)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.137

Colors that go with #105cea

Charcoal, Crimson and Amber 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 →

#ea9e10

#10c9ea · #3110ea

#ea105c · #5cea10

Split-complementary

Open in tool →

#ea3110 · #c9ea10

#ea10c9 · #ea9e10 · #10ea31

Contrast

#105cea as textRatioAAAA largeAAAFix
Aaon white
5.61:1passpassfail
  • AAA: use #0e4fc8 as the text (7.07:1)
Aaon black
3.74:1failpassfail
  • AA: use #286ef0 as the text (4.58:1)
  • AAA: use #6295f4 as the text (7.12:1)
  • AA: or shift the background to #e8e8e8 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #105cea as the background.

Brands using this color

Fonts for this mood

#105cea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #105cea
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 #105cea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/105cea-9ca5c4-df664e-211f2d-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