Color

#103f75

#103f75
hex#103f75
rgbrgb(16, 63, 117)
hslhsl(212, 76%, 26%)
oklchoklch(0.369 0.105 254.9)
Closest name: Aegean Blue (#1b416f)Relative luminance 0.0495

Colors that go with #103f75

Crimson, Teal and 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 →

#754610

#107175 · #131075

#75103f · #3f7510

Split-complementary

Open in tool →

#751310 · #717510

#751071 · #754610 · #107513

Contrast

#103f75 as textRatioAAAA largeAAAFix
Aaon white
10.55:1passpasspassPasses AAA — no fix needed.
Aaon black
1.99:1failfailfail
  • AA: use #1d74d7 as the text (4.53:1)
  • AAA: use #5499e8 as the text (7.1:1)
  • AA: or shift the background to #ababab (4.6:1)
  • AAA: or shift the background to #d4d4d4 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #103f75 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

#103f75 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103f75
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 #103f75 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103f75-9caac4-df564e-1f202d-e9f1f1?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