Color

#1b554c

#1b554c
hex#1b554c
rgbrgb(27, 85, 76)
hslhsl(171, 52%, 22%)
oklchoklch(0.409 0.061 181)
Closest name: Cape Verde (#01554f)Relative luminance 0.0725

Tints & shades

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

Harmonies

Complementary

Open in tool →

#551b24

#1b552f · #1b4155

#4d1b55 · #554d1b

Split-complementary

Open in tool →

#551b41 · #552f1b

#2f1b55 · #551b24 · #41551b

Contrast

#1b554c as textRatioAAAA largeAAAFix
Aaon white
8.57:1passpasspassPasses AAA — no fix needed.
Aaon black
2.45:1failfailfail
  • AA: use #2a8476 as the text (4.66:1)
  • AAA: use #35a796 as the text (7.12:1)
  • AA: or shift the background to #bdbdbd (4.56:1)
  • AAA: or shift the background to #ebebeb (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1b554c 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

#1b554c reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b554c
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #1b554c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b554c-a2bebd-d459a7-1f292d-e9f1ec?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