Color

#2d4dae

#2d4dae
hex#2d4dae
rgbrgb(45, 77, 174)
hslhsl(225, 59%, 43%)
oklchoklch(0.455 0.16 266.3)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0892

Colors that go with #2d4dae

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 →

#ae8e2d

#2d8eae · #4d2dae

#ae2d4d · #4dae2d

Split-complementary

Open in tool →

#ae4d2d · #8eae2d

#ae2d8e · #ae8e2d · #2dae4d

Contrast

#2d4dae as textRatioAAAA largeAAAFix
Aaon white
7.54:1passpasspassPasses AAA — no fix needed.
Aaon black
2.78:1failfailfail
  • AA: use #5171d2 as the text (4.64:1)
  • AAA: use #7d95de as the text (7.23:1)
  • AA: or shift the background to #c9c9c9 (4.55:1)
  • AAA: or shift the background to #f7f7f7 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2d4dae as the background.

Brands using this color

Fonts for this mood

#2d4dae reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d4dae
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 #2d4dae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d4dae-9ca1c4-df754e-221f2d-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