Color

#103fda

#103fda
hex#103fda
rgbrgb(16, 63, 218)
hslhsl(226, 86%, 46%)
oklchoklch(0.462 0.238 264.5)
Closest name: Brutally Blue (#0022dd)Relative luminance 0.0873

Colors that go with #103fda

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 →

#daab10

#10a4da · #4610da

#da103f · #3fda10

Split-complementary

Open in tool →

#da4610 · #a4da10

#da10a4 · #daab10 · #10da46

Contrast

#103fda as textRatioAAAA largeAAAFix
Aaon white
7.65:1passpasspassPasses AAA — no fix needed.
Aaon black
2.75:1failfailfail
  • AA: use #416af1 as the text (4.56:1)
  • AAA: use #7593f5 as the text (7.25:1)
  • AA: or shift the background to #c7c7c7 (4.52:1)
  • AAA: or shift the background to #f5f5f5 (7.02:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/103fda-9ca1c4-df774e-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