Color

#1b413b

#1b413b
hex#1b413b
rgbrgb(27, 65, 59)
hslhsl(171, 41%, 18%)
oklchoklch(0.346 0.045 181.9)
Closest name: Botanical Night (#12403c)Relative luminance 0.0433

Tints & shades

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

Harmonies

Complementary

Open in tool →

#411b21

#1b4128 · #1b3441

#3b1b41 · #413b1b

Split-complementary

Open in tool →

#411b34 · #41281b

#281b41 · #411b21 · #34411b

Contrast

#1b413b as textRatioAAAA largeAAAFix
Aaon white
11.25:1passpasspassPasses AAA — no fix needed.
Aaon black
1.87:1failfailfail
  • AA: use #368176 as the text (4.56:1)
  • AAA: use #45a597 as the text (7.08:1)
  • AA: or shift the background to #a6a6a6 (4.62:1)
  • AAA: or shift the background to #cccccc (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1b413b 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

#1b413b reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b413b
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 #1b413b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b413b-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