Color

#18545d

#18545d
hex#18545d
rgbrgb(24, 84, 93)
hslhsl(188, 59%, 23%)
oklchoklch(0.412 0.061 209.3)
Closest name: Abyssal Waters (#005765)Relative luminance 0.0733

Colors that go with #18545d

Steel Blue, Rust 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 →

#5d2118

#185d44 · #18315d

#5d1854 · #545d18

Split-complementary

Open in tool →

#5d1831 · #5d4418

#44185d · #5d2118 · #315d18

Contrast

#18545d as textRatioAAAA largeAAAFix
Aaon white
8.52:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #25808e as the text (4.56:1)
  • AAA: use #2fa4b6 as the text (7.11:1)
  • AA: or shift the background to #bdbdbd (4.53:1)
  • AAA: or shift the background to #ebebeb (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18545d as the background.

Brands using this color

Fonts for this mood

#18545d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18545d
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 #18545d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18545d-a2b7be-df4e81-1f252d-e9f1ee?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