Color

#133971

#133971
hex#133971
rgbrgb(19, 57, 113)
hslhsl(216, 71%, 26%)
oklchoklch(0.352 0.106 258.5)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0426

Tints & shades

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

Harmonies

Complementary

Open in tool →

#714c13

#136871 · #1d1371

#711339 · #397113

Split-complementary

Open in tool →

#711d13 · #687113

#711368 · #714c13 · #13711d

Contrast

#133971 as textRatioAAAA largeAAAFix
Aaon white
11.34:1passpasspassPasses AAA — no fix needed.
Aaon black
1.85:1failfailfail
  • AA: use #2e73dc as the text (4.6:1)
  • AAA: use #6296e4 as the text (7:1)
  • AA: or shift the background to #a6a6a6 (4.66:1)
  • AAA: or shift the background to #cccccc (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #133971 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

#133971 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #133971
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 #133971 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/133971-9ca7c4-df5f4e-201f2d-e9f0f1?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