Color

#1d3f44

#1d3f44
hex#1d3f44
rgbrgb(29, 63, 68)
hslhsl(188, 40%, 19%)
oklchoklch(0.344 0.04 208)
Closest name: Sunken Harbour (#1c3d44)Relative luminance 0.0423

Tints & shades

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

Harmonies

Complementary

Open in tool →

#44221d

#1d4436 · #1d2b44

#441d3f · #3f441d

Split-complementary

Open in tool →

#441d2b · #44361d

#361d44 · #44221d · #2b441d

Contrast

#1d3f44 as textRatioAAAA largeAAAFix
Aaon white
11.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.85:1failfailfail
  • AA: use #3c818b as the text (4.71:1)
  • AAA: use #4ba2af as the text (7.09:1)
  • AA: or shift the background to #a3a3a3 (4.51:1)
  • AAA: or shift the background to #cccccc (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d3f44 as the background.

Brands using this color

Fonts for this mood

#1d3f44 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d3f44
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 #1d3f44 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d3f44-a2b7be-df4e81-1f252d-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