Color

#1d4eaa

#1d4eaa
hex#1d4eaa
rgbrgb(29, 78, 170)
hslhsl(219, 71%, 39%)
oklchoklch(0.448 0.157 261.5)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0861

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#aa791d

#1d95aa · #321daa

#aa1d4e · #4eaa1d

Split-complementary

Open in tool →

#aa321d · #95aa1d

#aa1d95 · #aa791d · #1daa32

Contrast

#1d4eaa as textRatioAAAA largeAAAFix
Aaon white
7.71:1passpasspassPasses AAA — no fix needed.
Aaon black
2.72:1failfailfail
  • AA: use #3671dd as the text (4.56:1)
  • AAA: use #6b96e6 as the text (7.13:1)
  • AA: or shift the background to #c7c7c7 (4.56:1)
  • AAA: or shift the background to #f5f5f5 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d4eaa as the background.

Brands using this color

Fonts for this mood

#1d4eaa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d4eaa
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #1d4eaa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d4eaa-9ca5c4-df664e-211f2d-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