Color

#1351cd

#1351cd
hex#1351cd
rgbrgb(19, 81, 205)
hslhsl(220, 83%, 44%)
oklchoklch(0.482 0.202 262.2)
Closest name: Denim (#1560bd)Relative luminance 0.1043

Colors that go with #1351cd

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 →

#cd8f13

#13aecd · #3213cd

#cd1351 · #51cd13

Split-complementary

Open in tool →

#cd3213 · #aecd13

#cd13ae · #cd8f13 · #13cd32

Contrast

#1351cd as textRatioAAAA largeAAAFix
Aaon white
6.8:1passpassfail
  • AAA: use #134fc9 as the text (7.02:1)
Aaon black
3.09:1failpassfail
  • AA: use #3270ec as the text (4.66:1)
  • AAA: use #6594f1 as the text (7.06:1)
  • AA: or shift the background to #d4d4d4 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1351cd as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1351cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1351cd
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 #1351cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1351cd-9ca5c4-df694e-211f2d-e9f0f1?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