Color

#363dba

#363dba
hex#363dba
rgbrgb(54, 61, 186)
hslhsl(237, 55%, 47%)
oklchoklch(0.441 0.192 272.9)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0767

Colors that go with #363dba

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 →

#bab336

#367eba · #7136ba

#ba363d · #3dba36

Split-complementary

Open in tool →

#ba7136 · #7eba36

#ba367e · #bab336 · #36ba71

Contrast

#363dba as textRatioAAAA largeAAAFix
Aaon white
8.29:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #656ad2 as the text (4.55:1)
  • AAA: use #8c90de as the text (7.16:1)
  • AA: or shift the background to #bfbfbf (4.51:1)
  • AAA: or shift the background to #ededed (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #363dba as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#363dba reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #363dba
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 #363dba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/363dba-9f9cc4-df924e-251f2d-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