Color

#103af4

#103af4
hex#103af4
rgbrgb(16, 58, 244)
hslhsl(229, 91%, 51%)
oklchoklch(0.483 0.272 264.9)
Closest name: C64 Blue (#003aff)Relative luminance 0.0967

Colors that go with #103af4

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 →

#f4ca10

#10acf4 · #5810f4

#f4103a · #3af410

Split-complementary

Open in tool →

#f45810 · #acf410

#f410ac · #f4ca10 · #10f458

Contrast

#103af4 as textRatioAAAA largeAAAFix
Aaon white
7.16:1passpasspassPasses AAA — no fix needed.
Aaon black
2.93:1failfailfail
  • AA: use #4b6af7 as the text (4.7:1)
  • AAA: use #778ef9 as the text (7.02:1)
  • AA: or shift the background to #cfcfcf (4.59:1)
  • AAA: or shift the background to #ffffff (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #103af4 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#103af4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103af4
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 #103af4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103af4-9c9fc4-df7e4e-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