Color

#183443

#183443
hex#183443
rgbrgb(24, 52, 67)
hslhsl(201, 47%, 18%)
oklchoklch(0.31 0.043 234)
Closest name: Blue Whale (#1e3442)Relative luminance 0.0306

Tints & shades

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

Harmonies

Complementary

Open in tool →

#432718

#18433d · #181f43

#431834 · #344318

Split-complementary

Open in tool →

#43181f · #433d18

#3d1843 · #432718 · #1f4318

Contrast

#183443 as textRatioAAAA largeAAAFix
Aaon white
13.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.61:1failfailfail
  • AA: use #3a7da1 as the text (4.63:1)
  • AAA: use #5a9fc4 as the text (7.19:1)
  • AA: or shift the background to #999999 (4.58:1)
  • AAA: or shift the background to #bfbfbf (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #183443 as the background.

Brands using this color

Fonts for this mood

#183443 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #183443
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 #183443 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/183443-9cb1c4-df4e62-1f222d-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