Color

#356a8d

#356a8d
hex#356a8d
rgbrgb(53, 106, 141)
hslhsl(204, 45%, 38%)
oklchoklch(0.503 0.08 239.9)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1299

Colors that go with #356a8d

Charcoal, Royal Blue 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 →

#8d5835

#358d84 · #353e8d

#8d356a · #6a8d35

Split-complementary

Open in tool →

#8d353e · #8d8435

#84358d · #8d5835 · #3e8d35

Contrast

#356a8d as textRatioAAAA largeAAAFix
Aaon white
5.84:1passpassfail
  • AAA: use #2e5c7a as the text (7.17:1)
Aaon black
3.6:1failpassfail
  • AA: use #3e7aa3 as the text (4.52:1)
  • AAA: use #649ec4 as the text (7.23:1)
  • AA: or shift the background to #e3e3e3 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #356a8d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#356a8d reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #356a8d
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 #356a8d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/356a8d-9cafc4-df4e5a-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