Color

#18306d

#18306d
hex#18306d
rgbrgb(24, 48, 109)
hslhsl(223, 64%, 26%)
oklchoklch(0.33 0.11 264.8)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0341

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6d5518

#185a6d · #2a186d

#6d1830 · #306d18

Split-complementary

Open in tool →

#6d2a18 · #5a6d18

#6d185a · #6d5518 · #186d2a

Contrast

#18306d as textRatioAAAA largeAAAFix
Aaon white
12.48:1passpasspassPasses AAA — no fix needed.
Aaon black
1.68:1failfailfail
  • AA: use #4770d7 as the text (4.57:1)
  • AAA: use #7594e1 as the text (7.08:1)
  • AA: or shift the background to #9c9c9c (4.55:1)
  • AAA: or shift the background to #c2c2c2 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18306d 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

#18306d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18306d
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 #18306d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18306d-9ca3c4-df704e-211f2d-e9eff1?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