Color

#1f4e56

#1f4e56
hex#1f4e56
rgbrgb(31, 78, 86)
hslhsl(189, 47%, 23%)
oklchoklch(0.395 0.052 210.3)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0641

Colors that go with #1f4e56

Steel Blue, Teal and Rust 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 →

#56271f

#1f5643 · #1f3256

#561f4e · #4e561f

Split-complementary

Open in tool →

#561f32 · #56431f

#431f56 · #56271f · #32561f

Contrast

#1f4e56 as textRatioAAAA largeAAAFix
Aaon white
9.2:1passpasspassPasses AAA — no fix needed.
Aaon black
2.28:1failfailfail
  • AA: use #33818e as the text (4.67:1)
  • AAA: use #41a3b4 as the text (7.12:1)
  • AA: or shift the background to #b8b8b8 (4.64:1)
  • AAA: or shift the background to #e3e3e3 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f4e56 as the background.

Brands using this color

Fonts for this mood

#1f4e56 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f4e56
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 #1f4e56 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f4e56-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