Color

#133fcd

#133fcd
hex#133fcd
rgbrgb(19, 63, 205)
hslhsl(226, 83%, 44%)
oklchoklch(0.449 0.222 264.6)
Closest name: Denim (#2243b6)Relative luminance 0.081

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cda213

#139ccd · #4513cd

#cd133f · #3fcd13

Split-complementary

Open in tool →

#cd4513 · #9ccd13

#cd139c · #cda213 · #13cd45

Contrast

#133fcd as textRatioAAAA largeAAAFix
Aaon white
8.01:1passpasspassPasses AAA — no fix needed.
Aaon black
2.62:1failfailfail
  • AA: use #446cee as the text (4.63:1)
  • AAA: use #7391f2 as the text (7.06:1)
  • AA: or shift the background to #c4c4c4 (4.6:1)
  • AAA: or shift the background to #f0f0f0 (7.03:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/133fcd-9ca1c4-df774e-221f2d-e9eff1?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