Color

#266dab

#266dab
hex#266dab
rgbrgb(38, 109, 171)
hslhsl(208, 64%, 41%)
oklchoklch(0.522 0.12 248.8)
Closest name: Brilliant Blue (#0075b3)Relative luminance 0.1429

Colors that go with #266dab

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 →

#ab6426

#26aba7 · #262aab

#ab266d · #6dab26

Split-complementary

Open in tool →

#ab262a · #aba726

#a726ab · #ab6426 · #2aab26

Contrast

#266dab as textRatioAAAA largeAAAFix
Aaon white
5.44:1passpassfail
  • AAA: use #1f5a8e as the text (7.21:1)
Aaon black
3.86:1failpassfail
  • AA: use #2978bc as the text (4.51:1)
  • AAA: use #549bd9 as the text (7.07:1)
  • AA: or shift the background to #ebebeb (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #266dab as the background.

Brands using this color

Fonts for this mood

#266dab reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #266dab
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 #266dab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/266dab-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