Color

#1f2aff

#1f2aff
hex#1f2aff
rgbrgb(31, 42, 255)
hslhsl(237, 100%, 56%)
oklchoklch(0.481 0.293 266.8)
Closest name: C64 Blue (#003aff)Relative luminance 0.0917

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fff41f

#1f9aff · #841fff

#ff1f2a · #2aff1f

Split-complementary

Open in tool →

#ff841f · #9aff1f

#ff1f9a · #fff41f · #1fff84

Contrast

#1f2aff as textRatioAAAA largeAAAFix
Aaon white
7.41:1passpasspassPasses AAA — no fix needed.
Aaon black
2.83:1failfailfail
  • AA: use #5c64ff as the text (4.72:1)
  • AAA: use #858bff as the text (7.13:1)
  • AA: or shift the background to #cccccc (4.62:1)
  • AAA: or shift the background to #fafafa (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f2aff as the background.

Brands using this color

Fonts for this mood

#1f2aff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f2aff
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 #1f2aff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f2aff-9f9cc4-df924e-251f2d-e9edf1?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