Color

#359ee3

#359ee3
hex#359ee3
rgbrgb(53, 158, 227)
hslhsl(204, 76%, 55%)
oklchoklch(0.671 0.139 242.3)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3076

Colors that go with #359ee3

Charcoal, Tomato and Bronze 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 →

#e37b35

#35e3d2 · #3546e3

#e3359e · #9ee335

Split-complementary

Open in tool →

#e33546 · #e3d235

#d235e3 · #e37b35 · #46e335

Contrast

#359ee3 as textRatioAAAA largeAAAFix
Aaon white
2.94:1failfailfail
  • AA: use #1a7bbc as the text (4.56:1)
  • AAA: use #135b8b as the text (7.25:1)
  • AA: or shift the background to #2e2e2e (4.62:1)
  • AAA: or shift the background to #030303 (7.02:1)
Aaon black
7.15:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #359ee3 as the background.

Brands using this color

Fonts for this mood

#359ee3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #359ee3
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 #359ee3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/359ee3-9cafc4-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