Color

#131b7c

#131b7c
hex#131b7c
rgbrgb(19, 27, 124)
hslhsl(235, 73%, 28%)
oklchoklch(0.302 0.159 269)
Closest name: midnightblue (#191970)Relative luminance 0.0238

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7c7313

#13507c · #3f137c

#7c131c · #1c7c13

Split-complementary

Open in tool →

#7c3f13 · #507c13

#7c1350 · #7c7313 · #137c3f

Contrast

#131b7c as textRatioAAAA largeAAAFix
Aaon white
14.23:1passpasspassPasses AAA — no fix needed.
Aaon black
1.48:1failfailfail
  • AA: use #5c67e6 as the text (4.54:1)
  • AAA: use #8890ec as the text (7.25:1)
  • AA: or shift the background to #919191 (4.52:1)
  • AAA: or shift the background to #b8b8b8 (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 #131b7c as the background.

Brands using this color

Fonts for this mood

#131b7c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #131b7c
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 #131b7c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/131b7c-9e9cc4-df8d4e-241f2d-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