Color

#2a4fa7

#2a4fa7
hex#2a4fa7
rgbrgb(42, 79, 167)
hslhsl(222, 60%, 41%)
oklchoklch(0.453 0.148 264.2)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0887

Colors that go with #2a4fa7

Charcoal, Sea Green and Steel 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 →

#a7822a

#2a8ea7 · #432aa7

#a72a4f · #4fa72a

Split-complementary

Open in tool →

#a7432a · #8ea72a

#a72a8e · #a7822a · #2aa743

Contrast

#2a4fa7 as textRatioAAAA largeAAAFix
Aaon white
7.57:1passpasspassPasses AAA — no fix needed.
Aaon black
2.77:1failfailfail
  • AA: use #4771d1 as the text (4.55:1)
  • AAA: use #7897dd as the text (7.27:1)
  • AA: or shift the background to #c9c9c9 (4.57:1)
  • AAA: or shift the background to #f7f7f7 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a4fa7 as the background.

Brands using this color

Fonts for this mood

#2a4fa7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a4fa7
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 #2a4fa7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a4fa7-9ca3c4-df6e4e-211f2d-e9eff1?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