Color

#180d4e

#180d4e
hex#180d4e
rgbrgb(24, 13, 78)
hslhsl(250, 71%, 18%)
oklchoklch(0.23 0.111 280.9)
Closest name: Deadly Depths (#111144)Relative luminance 0.0103

Tints & shades

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

Harmonies

Complementary

Open in tool →

#444e0d

#0d234e · #390d4e

#4e180d · #0d4e18

Split-complementary

Open in tool →

#4e390d · #234e0d

#4e0d23 · #444e0d · #0d4e39

Contrast

#180d4e as textRatioAAAA largeAAAFix
Aaon white
17.41:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #7862e4 as the text (4.67:1)
  • AAA: use #9a89eb as the text (7.15:1)
  • AA: or shift the background to #828282 (4.53:1)
  • AAA: or shift the background to #a6a6a6 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #180d4e 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

#180d4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #180d4e
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 #180d4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/180d4e-a79cc4-dfb14e-281f2d-e9ecf1?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