Color

#2a5cb2

#2a5cb2
hex#2a5cb2
rgbrgb(42, 92, 178)
hslhsl(218, 62%, 43%)
oklchoklch(0.489 0.147 260.5)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1136

Colors that go with #2a5cb2

Charcoal, Sea Green 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 →

#b2802a

#2aa0b2 · #3c2ab2

#b22a5c · #5cb22a

Split-complementary

Open in tool →

#b23c2a · #a0b22a

#b22aa0 · #b2802a · #2ab23c

Contrast

#2a5cb2 as textRatioAAAA largeAAAFix
Aaon white
6.42:1passpassfail
  • AAA: use #2755a5 as the text (7.17:1)
Aaon black
3.27:1failpassfail
  • AA: use #3d73d1 as the text (4.57:1)
  • AAA: use #6e97dd as the text (7.13:1)
  • AA: or shift the background to #d9d9d9 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a5cb2 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#2a5cb2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a5cb2
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 #2a5cb2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a5cb2-9ca6c4-df644e-201f2d-e9f0f1?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