Color

#181c4e

#181c4e
hex#181c4e
rgbrgb(24, 28, 78)
hslhsl(236, 53%, 20%)
oklchoklch(0.257 0.091 274.6)
Closest name: Azulado (#211d49)Relative luminance 0.0157

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e4a18

#18374e · #2f184e

#4e181c · #1c4e18

Split-complementary

Open in tool →

#4e2f18 · #374e18

#4e1837 · #4e4a18 · #184e2f

Contrast

#181c4e as textRatioAAAA largeAAAFix
Aaon white
15.97:1passpasspassPasses AAA — no fix needed.
Aaon black
1.31:1failfailfail
  • AA: use #676ed0 as the text (4.72:1)
  • AAA: use #8a8fdb as the text (7.03:1)
  • AA: or shift the background to #8a8a8a (4.63:1)
  • AAA: or shift the background to #adadad (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #181c4e 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

#181c4e reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #181c4e
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 #181c4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/181c4e-9e9cc4-df8f4e-241f2d-e9eef1?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