Color

#133bcd

#133bcd
hex#133bcd
rgbrgb(19, 59, 205)
hslhsl(227, 83%, 44%)
oklchoklch(0.443 0.226 265)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0767

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cda513

#1399cd · #4813cd

#cd133b · #3bcd13

Split-complementary

Open in tool →

#cd4813 · #99cd13

#cd1399 · #cda513 · #13cd48

Contrast

#133bcd as textRatioAAAA largeAAAFix
Aaon white
8.28:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #4469ee as the text (4.5:1)
  • AAA: use #7892f2 as the text (7.19:1)
  • AA: or shift the background to #bfbfbf (4.51:1)
  • AAA: or shift the background to #ededed (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 #133bcd as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/133bcd-9ca0c4-df7a4e-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