Color

#1742cf

#1742cf
hex#1742cf
rgbrgb(23, 66, 207)
hslhsl(226, 80%, 45%)
oklchoklch(0.457 0.22 264.8)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0858

Colors that go with #1742cf

Charcoal, Sea Green and Steel Blue 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 →

#cfa417

#179ecf · #4817cf

#cf1742 · #42cf17

Split-complementary

Open in tool →

#cf4817 · #9ecf17

#cf179e · #cfa417 · #17cf48

Contrast

#1742cf as textRatioAAAA largeAAAFix
Aaon white
7.73:1passpasspassPasses AAA — no fix needed.
Aaon black
2.72:1failfailfail
  • AA: use #476deb as the text (4.66:1)
  • AAA: use #7592f0 as the text (7.13:1)
  • AA: or shift the background to #c7c7c7 (4.57:1)
  • AAA: or shift the background to #f5f5f5 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1742cf as the background.

Brands using this color

Fonts for this mood

#1742cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1742cf
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 #1742cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1742cf-9ca1c4-df774e-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