Color

#243f65

#243f65
hex#243f65
rgbrgb(36, 63, 101)
hslhsl(215, 47%, 27%)
oklchoklch(0.366 0.074 257.1)
Closest name: Black Turmeric (#2c4364)Relative luminance 0.0487

Tints & shades

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

Harmonies

Complementary

Open in tool →

#654a24

#246065 · #2a2465

#65243f · #3f6524

Split-complementary

Open in tool →

#652a24 · #606524

#652460 · #654a24 · #24652a

Contrast

#243f65 as textRatioAAAA largeAAAFix
Aaon white
10.64:1passpasspassPasses AAA — no fix needed.
Aaon black
1.97:1failfailfail
  • AA: use #4476bb as the text (4.55:1)
  • AAA: use #7197cc as the text (7:1)
  • AA: or shift the background to #ababab (4.63:1)
  • AAA: or shift the background to #d4d4d4 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #243f65 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

#243f65 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243f65
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 #243f65 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243f65-9ca8c4-df5d4e-201f2d-e9f0f1?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