Color

#103f50

#103f50
hex#103f50
rgbrgb(16, 63, 80)
hslhsl(196, 67%, 19%)
oklchoklch(0.345 0.057 226.5)
Closest name: Cold and Dark (#154250)Relative luminance 0.0424

Colors that go with #103f50

Crimson, Royal Blue and Teal 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 →

#512110

#105142 · #101f51

#511040 · #405110

Split-complementary

Open in tool →

#51101f · #514210

#421051 · #512110 · #1f5110

Contrast

#103f50 as textRatioAAAA largeAAAFix
Aaon white
11.36:1passpasspassPasses AAA — no fix needed.
Aaon black
1.85:1failfailfail
  • AA: use #207fa2 as the text (4.62:1)
  • AAA: use #28a1cc as the text (7.06:1)
  • AA: or shift the background to #a3a3a3 (4.5:1)
  • AAA: or shift the background to #cccccc (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 #103f50 as the background.

Brands using this color

Fonts for this mood

#103f50 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103f50
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 #103f50 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103f50-9cb5c4-df4e6e-1f232d-e9f1ef?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