Color

#243d47

#243d47
hex#243d47
rgbrgb(36, 61, 71)
hslhsl(197, 33%, 21%)
oklchoklch(0.344 0.035 225.3)
Closest name: Sunken Harbour (#1c3d44)Relative luminance 0.0417

Colors that go with #243d47

Dark Olive Green, Steel Blue and Teal lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#472e24

#244740 · #242c47

#47243d · #3d4724

Split-complementary

Open in tool →

#47242c · #474024

#402447 · #472e24 · #2c4724

Contrast

#243d47 as textRatioAAAA largeAAAFix
Aaon white
11.45:1passpasspassPasses AAA — no fix needed.
Aaon black
1.83:1failfailfail
  • AA: use #497d92 as the text (4.63:1)
  • AAA: use #669db2 as the text (7.03:1)
  • AA: or shift the background to #a3a3a3 (4.54:1)
  • AAA: or shift the background to #cccccc (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #243d47 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

#243d47 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243d47
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #243d47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243d47-9cb4c4-df4e6b-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