Color

#131d4e

#131d4e
hex#131d4e
rgbrgb(19, 29, 78)
hslhsl(230, 61%, 19%)
oklchoklch(0.256 0.091 270)
Closest name: Dark Soul (#112255)Relative luminance 0.0157

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#4e4413

#133a4e · #27134e

#4e131d · #1d4e13

Split-complementary

Open in tool →

#4e2713 · #3a4e13

#4e133a · #4e4413 · #134e27

Contrast

#131d4e as textRatioAAAA largeAAAFix
Aaon white
15.99:1passpasspassPasses AAA — no fix needed.
Aaon black
1.31:1failfailfail
  • AA: use #576cd6 as the text (4.52:1)
  • AAA: use #8493e1 as the text (7.24:1)
  • AA: or shift the background to #8a8a8a (4.63:1)
  • AAA: or shift the background to #adadad (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #131d4e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#131d4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #131d4e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #131d4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/131d4e-9c9ec4-df814e-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