Color

#1f4147

#1f4147
hex#1f4147
rgbrgb(31, 65, 71)
hslhsl(189, 39%, 20%)
oklchoklch(0.352 0.041 210.3)
Closest name: Sunken Harbour (#1c3d44)Relative luminance 0.0453

Tints & shades

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

Harmonies

Complementary

Open in tool →

#47251f

#1f4739 · #1f2d47

#471f41 · #41471f

Split-complementary

Open in tool →

#471f2d · #47391f

#391f47 · #47251f · #2d471f

Contrast

#1f4147 as textRatioAAAA largeAAAFix
Aaon white
11.02:1passpasspassPasses AAA — no fix needed.
Aaon black
1.91:1failfailfail
  • AA: use #3d7f8a as the text (4.6:1)
  • AAA: use #4ea2b1 as the text (7.13:1)
  • AA: or shift the background to #a6a6a6 (4.53:1)
  • AAA: or shift the background to #cfcfcf (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f4147 as the background.

Brands using this color

Fonts for this mood

#1f4147 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f4147
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 #1f4147 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f4147-a2b7be-df4e7e-1f252d-e9f1ee?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