Color

#180bcb

#180bcb
hex#180bcb
rgbrgb(24, 11, 203)
hslhsl(244, 90%, 42%)
oklchoklch(0.391 0.256 267.2)
Closest name: mediumblue (#0000cd)Relative luminance 0.0475

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bfcb0b

#0b5ecb · #780bcb

#cb180b · #0bcb18

Split-complementary

Open in tool →

#cb780b · #5ecb0b

#cb0b5e · #bfcb0b · #0bcb78

Contrast

#180bcb as textRatioAAAA largeAAAFix
Aaon white
10.77:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #695ff7 as the text (4.58:1)
  • AAA: use #928bf9 as the text (7.28:1)
  • AA: or shift the background to #a8a8a8 (4.53:1)
  • AAA: or shift the background to #d1d1d1 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #180bcb as the background.

Brands using this color

Fonts for this mood

#180bcb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #180bcb
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 #180bcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/180bcb-a39cc4-dfa24e-261f2d-e9edf1?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