Color

#133f90

#133f90
hex#133f90
rgbrgb(19, 63, 144)
hslhsl(219, 77%, 32%)
oklchoklch(0.391 0.143 261.3)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0571

Tints & shades

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

Harmonies

Complementary

Open in tool →

#906413

#137e90 · #261390

#90133f · #3f9013

Split-complementary

Open in tool →

#902613 · #7e9013

#90137e · #906413 · #139026

Contrast

#133f90 as textRatioAAAA largeAAAFix
Aaon white
9.81:1passpasspassPasses AAA — no fix needed.
Aaon black
2.14:1failfailfail
  • AA: use #2f6fe4 as the text (4.51:1)
  • AAA: use #6694eb as the text (7:1)
  • AA: or shift the background to #b0b0b0 (4.52:1)
  • AAA: or shift the background to #dbdbdb (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #133f90 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#133f90 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #133f90
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 #133f90 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/133f90-9ca5c4-df664e-211f2d-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