Color

#183a30

#183a30
hex#183a30
rgbrgb(24, 58, 48)
hslhsl(162, 41%, 16%)
oklchoklch(0.319 0.044 171.8)
Closest name: Botanical Night (#12403c)Relative luminance 0.0343

Colors that go with #183a30

Rust, Sea Green 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 →

#3a1822

#183a1f · #18333a

#2f183a · #3a2f18

Split-complementary

Open in tool →

#3a1833 · #3a1f18

#1f183a · #3a1822 · #333a18

Contrast

#183a30 as textRatioAAAA largeAAAFix
Aaon white
12.45:1passpasspassPasses AAA — no fix needed.
Aaon black
1.69:1failfailfail
  • AA: use #36816b as the text (4.51:1)
  • AAA: use #47a98c as the text (7.32:1)
  • AA: or shift the background to #9c9c9c (4.53:1)
  • AAA: or shift the background to #c4c4c4 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #183a30 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#183a30 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #183a30
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 #183a30 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/183a30-a2beb9-d459b9-1f2b2d-e9f1eb?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