Color

#1677df

#1677df
hex#1677df
rgbrgb(22, 119, 223)
hslhsl(211, 82%, 48%)
oklchoklch(0.575 0.179 255.1)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1869

Colors that go with #1677df

Charcoal, Crimson and Copper 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 →

#df7e16

#16dbdf · #1916df

#df1677 · #77df16

Split-complementary

Open in tool →

#df1916 · #dbdf16

#df16db · #df7e16 · #16df19

Contrast

#1677df as textRatioAAAA largeAAAFix
Aaon white
4.43:1failpassfail
  • AA: use #1675da as the text (4.57:1)
  • AAA: use #1057a2 as the text (7.22:1)
  • AA: or shift the background to #080808 (4.52:1)
Aaon black
4.74:1passpassfail
  • AAA: use #4a99ed as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1677df as the background.

Brands using this color

Fonts for this mood

#1677df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1677df
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 #1677df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1677df-9cabc4-df534e-1f202d-e9f1f1?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