Color

#164ef3

#164ef3
hex#164ef3
rgbrgb(22, 78, 243)
hslhsl(225, 90%, 52%)
oklchoklch(0.513 0.251 264.2)
Closest name: C64 Blue (#003aff)Relative luminance 0.1209

Colors that go with #164ef3

Charcoal, Crimson and Amber 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 →

#f3bc16

#16bcf3 · #4e16f3

#f3164e · #4ef316

Split-complementary

Open in tool →

#f34e16 · #bcf316

#f316bc · #f3bc16 · #16f34e

Contrast

#164ef3 as textRatioAAAA largeAAAFix
Aaon white
6.14:1passpassfail
  • AAA: use #0c43e9 as the text (7.01:1)
Aaon black
3.42:1failpassfail
  • AA: use #3d6bf5 as the text (4.62:1)
  • AAA: use #7294f8 as the text (7.31:1)
  • AA: or shift the background to #dedede (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #164ef3 as the background.

Brands using this color

Fonts for this mood

#164ef3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #164ef3
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 #164ef3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/164ef3-9ca1c4-df754e-221f2d-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