Color

#18005c

#18005c
hex#18005c
rgbrgb(24, 0, 92)
hslhsl(256, 100%, 18%)
oklchoklch(0.231 0.141 279.2)
Closest name: Ravenclaw (#0a0555)Relative luminance 0.0097

Tints & shades

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

Harmonies

Complementary

Open in tool →

#435c00

#00155c · #46005c

#5c1800 · #005c18

Split-complementary

Open in tool →

#5c4600 · #155c00

#5c0015 · #435c00 · #005c46

Contrast

#18005c as textRatioAAAA largeAAAFix
Aaon white
17.6:1passpasspassPasses AAA — no fix needed.
Aaon black
1.19:1failfailfail
  • AA: use #8052ff as the text (4.57:1)
  • AAA: use #a280ff as the text (7.07:1)
  • AA: or shift the background to #828282 (4.58:1)
  • AAA: or shift the background to #a6a6a6 (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18005c 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

#18005c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18005c
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 #18005c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18005c-ab9cc4-dfbf4e-291f2d-e9ebf1?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