Color

#131c39

#131c39
hex#131c39
rgbrgb(19, 28, 57)
hslhsl(226, 50%, 15%)
oklchoklch(0.235 0.057 268.7)
Closest name: Nightwalker (#161d3b)Relative luminance 0.0126

Colors that go with #131c39

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 →

#393013

#132f39 · #1d1339

#39131c · #1c3913

Split-complementary

Open in tool →

#391d13 · #2f3913

#39132f · #393013 · #13391d

Contrast

#131c39 as textRatioAAAA largeAAAFix
Aaon white
16.76:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #5771c7 as the text (4.59:1)
  • AAA: use #8194d5 as the text (7.13:1)
  • AA: or shift the background to #858585 (4.54:1)
  • AAA: or shift the background to #a8a8a8 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #131c39 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#131c39 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #131c39
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 #131c39 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/131c39-9ca1c4-df774e-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