Color

#1640fe

#1640fe
hex#1640fe
rgbrgb(22, 64, 254)
hslhsl(229, 99%, 54%)
oklchoklch(0.503 0.277 265.2)
Closest name: C64 Blue (#003aff)Relative luminance 0.1099

Colors that go with #1640fe

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 →

#fed316

#16b4fe · #5f16fe

#fe1640 · #40fe16

Split-complementary

Open in tool →

#fe5f16 · #b4fe16

#fe16b4 · #fed316 · #16fe5f

Contrast

#1640fe as textRatioAAAA largeAAAFix
Aaon white
6.57:1passpassfail
  • AAA: use #0634fe as the text (7.17:1)
Aaon black
3.2:1failpassfail
  • AA: use #4365fe as the text (4.53:1)
  • AAA: use #768ffe as the text (7.13:1)
  • AA: or shift the background to #d6d6d6 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1640fe as the background.

Brands using this color

Fonts for this mood

#1640fe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1640fe
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 #1640fe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1640fe-9c9fc4-df7e4e-231f2d-e9eef1?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