Color

#183e37

#183e37
hex#183e37
rgbrgb(24, 62, 55)
hslhsl(169, 44%, 17%)
oklchoklch(0.334 0.045 179.6)
Closest name: Botanical Night (#12403c)Relative luminance 0.0392

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3e181f

#183e24 · #18323e

#37183e · #3e3718

Split-complementary

Open in tool →

#3e1832 · #3e2418

#24183e · #3e181f · #323e18

Contrast

#183e37 as textRatioAAAA largeAAAFix
Aaon white
11.78:1passpasspassPasses AAA — no fix needed.
Aaon black
1.78:1failfailfail
  • AA: use #328172 as the text (4.52:1)
  • AAA: use #40a593 as the text (7.02:1)
  • AA: or shift the background to #a1a1a1 (4.56:1)
  • AAA: or shift the background to #c9c9c9 (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 #183e37 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#183e37 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #183e37
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #183e37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/183e37-a2bebc-d459ab-1f2a2d-e9f1ec?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