Color

#1f04cd

#1f04cd
hex#1f04cd
rgbrgb(31, 4, 205)
hslhsl(248, 96%, 41%)
oklchoklch(0.394 0.259 268.6)
Closest name: mediumblue (#0000cd)Relative luminance 0.0479

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b2cd04

#044ecd · #8304cd

#cd1f04 · #04cd1f

Split-complementary

Open in tool →

#cd8304 · #4ecd04

#cd044e · #b2cd04 · #04cd83

Contrast

#1f04cd as textRatioAAAA largeAAAFix
Aaon white
10.73:1passpasspassPasses AAA — no fix needed.
Aaon black
1.96:1failfailfail
  • AA: use #705afc as the text (4.56:1)
  • AAA: use #9787fd as the text (7.2:1)
  • AA: or shift the background to #a8a8a8 (4.51:1)
  • AAA: or shift the background to #d1d1d1 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f04cd 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

#1f04cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f04cd
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 #1f04cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f04cd-a69cc4-dfac4e-271f2d-e9ecf1?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