Color

#1d4aaa

#1d4aaa
hex#1d4aaa
rgbrgb(29, 74, 170)
hslhsl(221, 71%, 39%)
oklchoklch(0.44 0.162 262.7)
Closest name: Denim (#2243b6)Relative luminance 0.0806

Tints & shades

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

Harmonies

Complementary

Open in tool →

#aa7d1d

#1d90aa · #371daa

#aa1d4a · #4aaa1d

Split-complementary

Open in tool →

#aa371d · #90aa1d

#aa1d90 · #aa7d1d · #1daa37

Contrast

#1d4aaa as textRatioAAAA largeAAAFix
Aaon white
8.04:1passpasspassPasses AAA — no fix needed.
Aaon black
2.61:1failfailfail
  • AA: use #3f72de as the text (4.67:1)
  • AAA: use #6f95e7 as the text (7.13:1)
  • AA: or shift the background to #c2c2c2 (4.51:1)
  • AAA: or shift the background to #f0f0f0 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d4aaa as the background.

Brands using this color

Fonts for this mood

#1d4aaa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d4aaa
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 #1d4aaa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d4aaa-9ca4c4-df6b4e-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