Color

#1263ba

#1263ba
hex#1263ba
rgbrgb(18, 99, 186)
hslhsl(211, 82%, 40%)
oklchoklch(0.504 0.155 254.9)
Closest name: Denim (#1560bd)Relative luminance 0.126

Colors that go with #1263ba

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 →

#ba6912

#12b7ba · #1512ba

#ba1263 · #63ba12

Split-complementary

Open in tool →

#ba1512 · #b7ba12

#ba12b7 · #ba6912 · #12ba15

Contrast

#1263ba as textRatioAAAA largeAAAFix
Aaon white
5.97:1passpassfail
  • AAA: use #1057a2 as the text (7.22:1)
Aaon black
3.52:1failpassfail
  • AA: use #1675da as the text (4.59:1)
  • AAA: use #4a99ed as the text (7.07:1)
  • AA: or shift the background to #e0e0e0 (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 #1263ba as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/1263ba-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