Color

#103e70

#103e70
hex#103e70
rgbrgb(16, 62, 112)
hslhsl(211, 75%, 25%)
oklchoklch(0.363 0.099 253.9)
Closest name: Aegean Blue (#1b416f)Relative luminance 0.0473

Colors that go with #103e70

Blue, Crimson and Denim 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 →

#704110

#106e70 · #121070

#70103e · #3e7010

Split-complementary

Open in tool →

#701210 · #6e7010

#70106e · #704110 · #107012

Contrast

#103e70 as textRatioAAAA largeAAAFix
Aaon white
10.8:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #1e75d2 as the text (4.53:1)
  • AAA: use #5199e6 as the text (7.05:1)
  • AA: or shift the background to #a8a8a8 (4.54:1)
  • AAA: or shift the background to #d1d1d1 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #103e70 as the background.

Brands using this color

Fonts for this mood

#103e70 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103e70
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 #103e70 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103e70-9cabc4-df534e-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