Color

#133a4e

#133a4e
hex#133a4e
rgbrgb(19, 58, 78)
hslhsl(200, 61%, 19%)
oklchoklch(0.331 0.056 234.5)
Closest name: Astral Nomad (#203943)Relative luminance 0.0371

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e2713

#134e44 · #131d4e

#4e133a · #3a4e13

Split-complementary

Open in tool →

#4e131d · #4e4413

#44134e · #4e2713 · #1d4e13

Contrast

#133a4e as textRatioAAAA largeAAAFix
Aaon white
12.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.74:1failfailfail
  • AA: use #297ea8 as the text (4.64:1)
  • AAA: use #3ea0d0 as the text (7.14:1)
  • AA: or shift the background to #a1a1a1 (4.66:1)
  • AAA: or shift the background to #c7c7c7 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #133a4e 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

#133a4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #133a4e
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 #133a4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/133a4e-9cb2c4-df4e64-1f232d-e9f1f0?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