Color

#182f3e

#182f3e
hex#182f3e
rgbrgb(24, 47, 62)
hslhsl(204, 44%, 17%)
oklchoklch(0.294 0.04 238.7)
Closest name: Blue Whale (#1e3442)Relative luminance 0.0258

Colors that go with #182f3e

Dark Olive Green, Royal Blue and Rust 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.

Real palettes that use #182f3e

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#3e2818

#183e3b · #181c3e

#3e182f · #2f3e18

Split-complementary

Open in tool →

#3e181c · #3e3b18

#3b183e · #3e2818 · #1c3e18

Contrast

#182f3e as textRatioAAAA largeAAAFix
Aaon white
13.86:1passpasspassPasses AAA — no fix needed.
Aaon black
1.52:1failfailfail
  • AA: use #3f7aa2 as the text (4.52:1)
  • AAA: use #659dc3 as the text (7.16:1)
  • AA: or shift the background to #949494 (4.57:1)
  • AAA: or shift the background to #bababa (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 #182f3e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#182f3e reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #182f3e
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 #182f3e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/182f3e-9cafc4-df4e5a-1f222d-e9f1f0?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