Color

#0f2129

#0f2129
hex#0f2129
rgbrgb(15, 33, 41)
hslhsl(198, 46%, 11%)
oklchoklch(0.236 0.028 228.5)
Closest name: Sunken Ship (#10252a)Relative luminance 0.0135

Colors that go with #0f2129

Charcoal, Amber and Blue 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.

Real palettes that use #0f2129

Tints & shades

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

Harmonies

Complementary

Open in tool →

#29170f

#0f2924 · #0f1429

#290f21 · #21290f

Split-complementary

Open in tool →

#290f14 · #29240f

#240f29 · #29170f · #14290f

Contrast

#0f2129 as textRatioAAAA largeAAAFix
Aaon white
16.54:1passpasspassPasses AAA — no fix needed.
Aaon black
1.27:1failfailfail
  • AA: use #387c99 as the text (4.51:1)
  • AAA: use #549fc0 as the text (7.1:1)
  • AA: or shift the background to #878787 (4.6:1)
  • AAA: or shift the background to #ababab (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f2129 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0f2129 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f2129
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 #0f2129 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f2129-9cb3c4-df4e69-1f232d-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