Color

#243b47

#243b47
hex#243b47
rgbrgb(36, 59, 71)
hslhsl(201, 33%, 21%)
oklchoklch(0.339 0.036 232)
Closest name: Astral Nomad (#203943)Relative luminance 0.0396

Tints & shades

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

Harmonies

Complementary

Open in tool →

#473024

#244742 · #242947

#47243b · #3b4724

Split-complementary

Open in tool →

#472429 · #474224

#422447 · #473024 · #294724

Contrast

#243b47 as textRatioAAAA largeAAAFix
Aaon white
11.72:1passpasspassPasses AAA — no fix needed.
Aaon black
1.79:1failfailfail
  • AA: use #4b7b95 as the text (4.57:1)
  • AAA: use #6d9cb6 as the text (7.08:1)
  • AA: or shift the background to #a1a1a1 (4.54:1)
  • AAA: or shift the background to #c9c9c9 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #243b47 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

#243b47 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243b47
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 #243b47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243b47-9cb1c4-df4e62-1f222d-e9f1f0?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