Color

#180c5a

#180c5a
hex#180c5a
rgbrgb(24, 12, 90)
hslhsl(249, 76%, 20%)
oklchoklch(0.243 0.128 278)
Closest name: Dying Storm Blue (#111166)Relative luminance 0.012

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e5a0c

#0c275a · #3f0c5a

#5a180c · #0c5a18

Split-complementary

Open in tool →

#5a3f0c · #275a0c

#5a0c27 · #4e5a0c · #0c5a3f

Contrast

#180c5a as textRatioAAAA largeAAAFix
Aaon white
16.95:1passpasspassPasses AAA — no fix needed.
Aaon black
1.24:1failfailfail
  • AA: use #7662ea as the text (4.71:1)
  • AAA: use #998aef as the text (7.24:1)
  • AA: or shift the background to #858585 (4.59:1)
  • AAA: or shift the background to #a8a8a8 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #180c5a 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

#180c5a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #180c5a
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 #180c5a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/180c5a-a79cc4-dfae4e-271f2d-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