Color

#183649

#183649
hex#183649
rgbrgb(24, 54, 73)
hslhsl(203, 51%, 19%)
oklchoklch(0.319 0.049 238.7)
Closest name: Blue Whale (#1e3442)Relative luminance 0.0331

Tints & shades

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

Harmonies

Complementary

Open in tool →

#492b18

#184943 · #181e49

#491836 · #364918

Split-complementary

Open in tool →

#49181e · #494318

#431849 · #492b18 · #1e4918

Contrast

#183649 as textRatioAAAA largeAAAFix
Aaon white
12.63:1passpasspassPasses AAA — no fix needed.
Aaon black
1.66:1failfailfail
  • AA: use #367ba6 as the text (4.54:1)
  • AAA: use #599ec9 as the text (7.16:1)
  • AA: or shift the background to #9c9c9c (4.6:1)
  • AAA: or shift the background to #c2c2c2 (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 #183649 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

#183649 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #183649
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 #183649 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/183649-9cb0c4-df4e5d-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