Color

#103d65

#103d65
hex#103d65
rgbrgb(16, 61, 101)
hslhsl(208, 73%, 23%)
oklchoklch(0.352 0.085 249.6)
Closest name: Aegean Blue (#1b416f)Relative luminance 0.0439

Colors that go with #103d65

Crimson, Teal and Sienna 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 →

#653810

#106563 · #101365

#65103e · #3e6510

Split-complementary

Open in tool →

#651013 · #656310

#631065 · #653810 · #136510

Contrast

#103d65 as textRatioAAAA largeAAAFix
Aaon white
11.19:1passpasspassPasses AAA — no fix needed.
Aaon black
1.88:1failfailfail
  • AA: use #1f78c7 as the text (4.57:1)
  • AAA: use #4a9ce3 as the text (7.16:1)
  • AA: or shift the background to #a6a6a6 (4.59:1)
  • AAA: or shift the background to #cfcfcf (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #103d65 as the background.

Brands using this color

Fonts for this mood

#103d65 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103d65
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 #103d65 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103d65-9cadc4-df4e51-1f212d-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