Color

#204155

#204155
hex#204155
rgbrgb(32, 65, 85)
hslhsl(203, 45%, 23%)
oklchoklch(0.36 0.052 237.2)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0474

Colors that go with #204155

Royal Blue, Teal and Sienna 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 →

#553420

#20554f · #202655

#552041 · #415520

Split-complementary

Open in tool →

#552026 · #554f20

#4f2055 · #553420 · #265520

Contrast

#204155 as textRatioAAAA largeAAAFix
Aaon white
10.78:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #3e7ca3 as the text (4.62:1)
  • AAA: use #609dc3 as the text (7.11:1)
  • 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 #204155 as the background.

Brands using this color

Fonts for this mood

#204155 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #204155
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 #204155 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/204155-9cb0c4-df4e5d-1f222d-e9f1f0?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