Color

#103ebc

#103ebc
hex#103ebc
rgbrgb(16, 62, 188)
hslhsl(224, 84%, 40%)
oklchoklch(0.43 0.203 264)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0719

Colors that go with #103ebc

Charcoal, Crimson and Steel 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 →

#bc8e10

#1094bc · #3810bc

#bc103e · #3ebc10

Split-complementary

Open in tool →

#bc3810 · #94bc10

#bc1094 · #bc8e10 · #10bc38

Contrast

#103ebc as textRatioAAAA largeAAAFix
Aaon white
8.62:1passpasspassPasses AAA — no fix needed.
Aaon black
2.44:1failfailfail
  • AA: use #3f6dee as the text (4.63:1)
  • AAA: use #7295f3 as the text (7.31:1)
  • AA: or shift the background to #bdbdbd (4.59:1)
  • AAA: or shift the background to #e8e8e8 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #103ebc as the background.

Brands using this color

Fonts for this mood

#103ebc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103ebc
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 #103ebc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103ebc-9ca2c4-df724e-221f2d-e9eff1?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