Color

#155299

#155299
hex#155299
rgbrgb(21, 82, 153)
hslhsl(212, 76%, 34%)
oklchoklch(0.442 0.131 255.4)
Closest name: Blue Chip (#1d5699)Relative luminance 0.0849

Colors that go with #155299

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 →

#995b15

#159499 · #191599

#991552 · #529915

Split-complementary

Open in tool →

#991915 · #949915

#991594 · #995b15 · #159919

Contrast

#155299 as textRatioAAAA largeAAAFix
Aaon white
7.78:1passpasspassPasses AAA — no fix needed.
Aaon black
2.7:1failfailfail
  • AA: use #1d74d7 as the text (4.53:1)
  • AAA: use #5499e8 as the text (7.1:1)
  • AA: or shift the background to #c7c7c7 (4.6:1)
  • AAA: or shift the background to #f5f5f5 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #155299 as the background.

Brands using this color

Fonts for this mood

#155299 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #155299
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 #155299 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/155299-9caac4-df564e-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