Color

#131a39

#131a39
hex#131a39
rgbrgb(19, 26, 57)
hslhsl(229, 50%, 15%)
oklchoklch(0.23 0.06 271.4)
Closest name: Nightwalker (#161d3b)Relative luminance 0.0117

Colors that go with #131a39

Charcoal, Dark Olive Green and Sea Green 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 →

#393213

#132d39 · #1f1339

#39131a · #1a3913

Split-complementary

Open in tool →

#391f13 · #2d3913

#39132d · #393213 · #13391f

Contrast

#131a39 as textRatioAAAA largeAAAFix
Aaon white
17.01:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #5b6fc8 as the text (4.55:1)
  • AAA: use #8594d6 as the text (7.2:1)
  • AA: or shift the background to #858585 (4.61:1)
  • AAA: or shift the background to #a8a8a8 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #131a39 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#131a39 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #131a39
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 #131a39 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/131a39-9c9fc4-df7e4e-231f2d-e9eef1?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