Color

#243133

#243133
hex#243133
rgbrgb(36, 49, 51)
hslhsl(188, 17%, 17%)
oklchoklch(0.302 0.018 207.9)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0281

Colors that go with #243133

Amber, Blue and Blush Pink 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 →

#332624

#24332d · #242933

#332431 · #313324

Split-complementary

Open in tool →

#332429 · #332d24

#2d2433 · #332624 · #293324

Contrast

#243133 as textRatioAAAA largeAAAFix
Aaon white
13.44:1passpasspassPasses AAA — no fix needed.
Aaon black
1.56:1failfailfail
  • AA: use #5b7b80 as the text (4.59:1)
  • AAA: use #799ba0 as the text (7.01:1)
  • AA: or shift the background to #969696 (4.54:1)
  • AAA: or shift the background to #bdbdbd (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #243133 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#243133 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243133
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 #243133 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243133-a2b7be-df4e81-1f252d-e9f1ee?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