Color

#0c55bb

#0c55bb
hex#0c55bb
rgbrgb(12, 85, 187)
hslhsl(215, 88%, 39%)
oklchoklch(0.473 0.174 259.1)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1016

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bb720c

#0cacbb · #1b0cbb

#bb0c55 · #55bb0c

Split-complementary

Open in tool →

#bb1b0c · #acbb0c

#bb0cac · #bb720c · #0cbb1b

Contrast

#0c55bb as textRatioAAAA largeAAAFix
Aaon white
6.92:1passpassfail
  • AAA: use #0c53b6 as the text (7.17:1)
Aaon black
3.03:1failpassfail
  • AA: use #1470f0 as the text (4.61:1)
  • AAA: use #5296f4 as the text (7.03:1)
  • AA: or shift the background to #d1d1d1 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0c55bb as the background.

Brands using this color

Fonts for this mood

#0c55bb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0c55bb
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 #0c55bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0c55bb-9ca8c4-df5d4e-201f2d-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