Color

#0b504c

#0b504c
hex#0b504c
rgbrgb(11, 80, 76)
hslhsl(177, 76%, 18%)
oklchoklch(0.391 0.064 188.8)
Closest name: Cape Verde (#01554f)Relative luminance 0.0633

Colors that go with #0b504c

Crimson, Blue and Deep Sky 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#510b0f

#0b512a · #0b3151

#4d0b51 · #514d0b

Split-complementary

Open in tool →

#510b31 · #512a0b

#2a0b51 · #510b0f · #31510b

Contrast

#0b504c as textRatioAAAA largeAAAFix
Aaon white
9.27:1passpasspassPasses AAA — no fix needed.
Aaon black
2.27:1failfailfail
  • AA: use #12827d as the text (4.51:1)
  • AAA: use #17aba3 as the text (7.39:1)
  • AA: or shift the background to #b5b5b5 (4.52:1)
  • AAA: or shift the background to #e0e0e0 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b504c as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0b504c reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b504c
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 #0b504c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b504c-a2bcbe-d4599b-1f282d-e9f1ed?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