Color

#1c68ab

#1c68ab
hex#1c68ab
rgbrgb(28, 104, 171)
hslhsl(208, 72%, 39%)
oklchoklch(0.507 0.128 250)
Closest name: Brilliant Blue (#0075b3)Relative luminance 0.1309

Colors that go with #1c68ab

Charcoal, Crimson and Sienna 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 →

#ab5f1c

#1caba6 · #1c21ab

#ab1c68 · #68ab1c

Split-complementary

Open in tool →

#ab1c21 · #aba61c

#a61cab · #ab5f1c · #21ab1c

Contrast

#1c68ab as textRatioAAAA largeAAAFix
Aaon white
5.81:1passpassfail
  • AAA: use #185b95 as the text (7.07:1)
Aaon black
3.62:1failpassfail
  • AA: use #2078c5 as the text (4.55:1)
  • AAA: use #4b9be2 as the text (7.09:1)
  • AA: or shift the background to #e3e3e3 (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 #1c68ab as the background.

Brands using this color

Fonts for this mood

#1c68ab reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1c68ab
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 #1c68ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1c68ab-9cadc4-df4e51-1f212d-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