Color

#1f2d60

#1f2d60
hex#1f2d60
rgbrgb(31, 45, 96)
hslhsl(227, 51%, 25%)
oklchoklch(0.316 0.092 269)
Closest name: Marine (#042e60)Relative luminance 0.0301

Colors that go with #1f2d60

Dark Olive Green, Sea Green and Steel Blue 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 →

#60521f

#1f4e60 · #321f60

#601f2d · #2d601f

Split-complementary

Open in tool →

#60321f · #4e601f

#601f4e · #60521f · #1f6032

Contrast

#1f2d60 as textRatioAAAA largeAAAFix
Aaon white
13.1:1passpasspassPasses AAA — no fix needed.
Aaon black
1.6:1failfailfail
  • AA: use #5972c9 as the text (4.68:1)
  • AAA: use #8093d6 as the text (7.06:1)
  • AA: or shift the background to #999999 (4.6:1)
  • AAA: or shift the background to #bfbfbf (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f2d60 as the background.

Brands using this color

Fonts for this mood

#1f2d60 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f2d60
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 #1f2d60 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f2d60-9ca0c4-df7a4e-221f2d-e9eff1?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