Color

#240d54

#240d54
hex#240d54
rgbrgb(36, 13, 84)
hslhsl(259, 73%, 19%)
oklchoklch(0.249 0.117 289.7)
Closest name: Blackmail (#220066)Relative luminance 0.013

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3d540d

#0d1a54 · #470d54

#54230d · #0d5423

Split-complementary

Open in tool →

#54470d · #1a540d

#540d1a · #3d540d · #0d5447

Contrast

#240d54 as textRatioAAAA largeAAAFix
Aaon white
16.66:1passpasspassPasses AAA — no fix needed.
Aaon black
1.26:1failfailfail
  • AA: use #875ce6 as the text (4.7:1)
  • AAA: use #a483ec as the text (7.04:1)
  • AA: or shift the background to #858585 (4.51:1)
  • AAA: or shift the background to #a8a8a8 (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 #240d54 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

#240d54 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #240d54
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 #240d54 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/240d54-ad9cc4-dfc74e-2a1f2d-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