Color

#0e3f4e

#0e3f4e
hex#0e3f4e
rgbrgb(14, 63, 78)
hslhsl(194, 70%, 18%)
oklchoklch(0.343 0.056 222.9)
Closest name: Cold and Dark (#154250)Relative luminance 0.042

Colors that go with #0e3f4e

Crimson, Denim 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 →

#4e1d0e

#0e4e3d · #0e1f4e

#4e0e3f · #3f4e0e

Split-complementary

Open in tool →

#4e0e1f · #4e3d0e

#3d0e4e · #4e1d0e · #1f4e0e

Contrast

#0e3f4e as textRatioAAAA largeAAAFix
Aaon white
11.41:1passpasspassPasses AAA — no fix needed.
Aaon black
1.84:1failfailfail
  • AA: use #1c7e9c as the text (4.51:1)
  • AAA: use #24a5cc as the text (7.33:1)
  • AA: or shift the background to #a3a3a3 (4.53:1)
  • AAA: or shift the background to #cccccc (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0e3f4e as the background.

Brands using this color

Fonts for this mood

#0e3f4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0e3f4e
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 #0e3f4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0e3f4e-9cb6c4-df4e72-1f242d-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