Color

#243f47

#243f47
hex#243f47
rgbrgb(36, 63, 71)
hslhsl(194, 33%, 21%)
oklchoklch(0.35 0.036 218.7)
Closest name: Sunken Harbour (#1c3d44)Relative luminance 0.0439

Tints & shades

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

Harmonies

Complementary

Open in tool →

#472c24

#24473e · #242d47

#47243f · #3f4724

Split-complementary

Open in tool →

#47242d · #473e24

#3e2447 · #472c24 · #2d4724

Contrast

#243f47 as textRatioAAAA largeAAAFix
Aaon white
11.19:1passpasspassPasses AAA — no fix needed.
Aaon black
1.88:1failfailfail
  • AA: use #487e8e as the text (4.65:1)
  • AAA: use #639eb0 as the text (7.05:1)
  • AA: or shift the background to #a6a6a6 (4.6:1)
  • AAA: or shift the background to #cfcfcf (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 #243f47 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

#243f47 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243f47
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 #243f47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243f47-9cb6c4-df4e72-1f242d-e9f1ef?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