Color

#103c84

#103c84
hex#103c84
rgbrgb(16, 60, 132)
hslhsl(217, 78%, 29%)
oklchoklch(0.373 0.13 260.1)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0501

Colors that go with #103c84

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 →

#845710

#107684 · #1e1084

#84103c · #3c8410

Split-complementary

Open in tool →

#841e10 · #768410

#841076 · #845710 · #10841e

Contrast

#103c84 as textRatioAAAA largeAAAFix
Aaon white
10.49:1passpasspassPasses AAA — no fix needed.
Aaon black
2:1failfailfail
  • AA: use #2a71e5 as the text (4.59:1)
  • AAA: use #6096eb as the text (7.06:1)
  • AA: or shift the background to #ababab (4.57:1)
  • AAA: or shift the background to #d4d4d4 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #103c84 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#103c84 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103c84
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 #103c84 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103c84-9ca7c4-df624e-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