Color

#0018cc

#0018cc
hex#0018cc
rgbrgb(0, 24, 204)
hslhsl(233, 100%, 40%)
oklchoklch(0.395 0.256 264.2)
Closest name: mediumblue (#0000cd)Relative luminance 0.0501

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ccb400

#007ecc · #4e00cc

#cc0018 · #18cc00

Split-complementary

Open in tool →

#cc4e00 · #7ecc00

#cc007e · #ccb400 · #00cc4e

Contrast

#0018cc as textRatioAAAA largeAAAFix
Aaon white
10.49:1passpasspassPasses AAA — no fix needed.
Aaon black
2:1failfailfail
  • AA: use #5266ff as the text (4.7:1)
  • AAA: use #808eff as the text (7.23:1)
  • AA: or shift the background to #ababab (4.57:1)
  • AAA: or shift the background to #d4d4d4 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0018cc as the background.

Brands using this color

Fonts for this mood

#0018cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0018cc
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 #0018cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0018cc-9c9cc4-df884e-241f2d-e9eef1?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