Color

#243a42

#243a42
hex#243a42
rgbrgb(36, 58, 66)
hslhsl(196, 29%, 20%)
oklchoklch(0.334 0.031 222.8)
Closest name: Astral Nomad (#203943)Relative luminance 0.0379

Tints & shades

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

Harmonies

Complementary

Open in tool →

#422c24

#24423b · #242b42

#42243a · #3a4224

Split-complementary

Open in tool →

#42242b · #423b24

#3b2442 · #422c24 · #2b4224

Contrast

#243a42 as textRatioAAAA largeAAAFix
Aaon white
11.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.76:1failfailfail
  • AA: use #4e7c8d as the text (4.59:1)
  • AAA: use #6e9eaf as the text (7.17:1)
  • AA: or shift the background to #a1a1a1 (4.62:1)
  • AAA: or shift the background to #c7c7c7 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #243a42 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

#243a42 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243a42
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 #243a42 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243a42-9cb5c4-df4e6e-1f232d-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