Color

#204cbc

#204cbc
hex#204cbc
rgbrgb(32, 76, 188)
hslhsl(223, 71%, 43%)
oklchoklch(0.46 0.183 264.1)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0911

Colors that go with #204cbc

Charcoal, Sea Green and Steel Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bc8f20

#209abc · #4220bc

#bc204c · #4cbc20

Split-complementary

Open in tool →

#bc4220 · #9abc20

#bc209a · #bc8f20 · #20bc42

Contrast

#204cbc as textRatioAAAA largeAAAFix
Aaon white
7.44:1passpasspassPasses AAA — no fix needed.
Aaon black
2.82:1failfailfail
  • AA: use #4370df as the text (4.62:1)
  • AAA: use #7394e7 as the text (7.12:1)
  • AA: or shift the background to #cccccc (4.63:1)
  • AAA: or shift the background to #fafafa (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #204cbc as the background.

Brands using this color

Fonts for this mood

#204cbc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #204cbc
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #204cbc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/204cbc-9ca3c4-df704e-211f2d-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