Color

#1d73dd

#1d73dd
hex#1d73dd
rgbrgb(29, 115, 221)
hslhsl(213, 77%, 49%)
oklchoklch(0.566 0.18 256.7)
Closest name: royalblue (#4169e1)Relative luminance 0.1774

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dd871d

#1dd4dd · #261ddd

#dd1d73 · #73dd1d

Split-complementary

Open in tool →

#dd261d · #d4dd1d

#dd1dd4 · #dd871d · #1ddd26

Contrast

#1d73dd as textRatioAAAA largeAAAFix
Aaon white
4.62:1passpassfail
  • AAA: use #1657a7 as the text (7.11:1)
Aaon black
4.55:1passpassfail
  • AAA: use #5899e9 as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d73dd 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

#1d73dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d73dd
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 #1d73dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d73dd-9ca9c4-df584e-1f202d-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