Color

#233139

#233139
hex#233139
rgbrgb(35, 49, 57)
hslhsl(202, 24%, 18%)
oklchoklch(0.304 0.024 233.6)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.0285

Colors that go with #233139

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 →

#392b23

#233936 · #232639

#392331 · #313923

Split-complementary

Open in tool →

#392326 · #393623

#362339 · #392b23 · #263923

Contrast

#233139 as textRatioAAAA largeAAAFix
Aaon white
13.38:1passpasspassPasses AAA — no fix needed.
Aaon black
1.57:1failfailfail
  • AA: use #577a8e as the text (4.58:1)
  • AAA: use #7a9bae as the text (7.13:1)
  • AA: or shift the background to #969696 (4.52:1)
  • AAA: or shift the background to #bdbdbd (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #233139 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#233139 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #233139
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 #233139 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/233139-9cb1c4-df4e5f-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