Color

#1263ab

#1263ab
hex#1263ab
rgbrgb(18, 99, 171)
hslhsl(208, 81%, 37%)
oklchoklch(0.494 0.136 251.3)
Closest name: Denim (#1560bd)Relative luminance 0.1199

Colors that go with #1263ab

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 →

#ab5912

#12aba6 · #1217ab

#ab1263 · #63ab12

Split-complementary

Open in tool →

#ab1217 · #aba612

#a612ab · #ab5912 · #17ab12

Contrast

#1263ab as textRatioAAAA largeAAAFix
Aaon white
6.18:1passpassfail
  • AAA: use #105998 as the text (7.23:1)
Aaon black
3.4:1failpassfail
  • AA: use #1679d0 as the text (4.68:1)
  • AAA: use #3d9aeb as the text (7.02:1)
  • AA: or shift the background to #dedede (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 #1263ab as the background.

Brands using this color

Fonts for this mood

#1263ab reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1263ab
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 #1263ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1263ab-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