Color

#1f424c

#1f424c
hex#1f424c
rgbrgb(31, 66, 76)
hslhsl(193, 42%, 21%)
oklchoklch(0.357 0.044 218.7)
Closest name: Cold and Dark (#154250)Relative luminance 0.0471

Colors that go with #1f424c

Steel Blue, Teal and Sienna 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 →

#4c291f

#1f4c3f · #1f2c4c

#4c1f42 · #424c1f

Split-complementary

Open in tool →

#4c1f2c · #4c3f1f

#3f1f4c · #4c291f · #2c4c1f

Contrast

#1f424c as textRatioAAAA largeAAAFix
Aaon white
10.81:1passpasspassPasses AAA — no fix needed.
Aaon black
1.94:1failfailfail
  • AA: use #3b7e91 as the text (4.58:1)
  • AAA: use #4ea0b7 as the text (7.04:1)
  • AA: or shift the background to #a8a8a8 (4.55:1)
  • AAA: or shift the background to #d1d1d1 (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 #1f424c as the background.

Brands using this color

Fonts for this mood

#1f424c reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f424c
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 #1f424c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f424c-a2b5be-df4e75-1f242d-e9f1ef?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