Color

#0811b4

#0811b4
hex#0811b4
rgbrgb(8, 17, 180)
hslhsl(237, 91%, 37%)
oklchoklch(0.36 0.233 265.3)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0375

Colors that go with #0811b4

Charcoal, Crimson and Cornflower 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 →

#b4ac08

#0867b4 · #5608b4

#b40811 · #11b408

Split-complementary

Open in tool →

#b45608 · #67b408

#b40867 · #b4ac08 · #08b456

Contrast

#0811b4 as textRatioAAAA largeAAAFix
Aaon white
12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.75:1failfailfail
  • AA: use #5e66f7 as the text (4.72:1)
  • AAA: use #858bf9 as the text (7.06:1)
  • AA: or shift the background to #a1a1a1 (4.65:1)
  • AAA: or shift the background to #c7c7c7 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0811b4 as the background.

Brands using this color

Fonts for this mood

#0811b4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0811b4
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 #0811b4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0811b4-9f9cc4-df924e-251f2d-e9edf1?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