Color

#1f59ea

#1f59ea
hex#1f59ea
rgbrgb(31, 89, 234)
hslhsl(223, 83%, 52%)
oklchoklch(0.525 0.227 263.7)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1338

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eab11f

#1fbeea · #4b1fea

#ea1f59 · #59ea1f

Split-complementary

Open in tool →

#ea4b1f · #beea1f

#ea1fbe · #eab11f · #1fea4b

Contrast

#1f59ea as textRatioAAAA largeAAAFix
Aaon white
5.71:1passpassfail
  • AAA: use #1449d2 as the text (7.21:1)
Aaon black
3.68:1failpassfail
  • AA: use #3b6ded as the text (4.6:1)
  • AAA: use #6e94f2 as the text (7.18:1)
  • AA: or shift the background to #e6e6e6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f59ea as the background.

Brands using this color

Fonts for this mood

#1f59ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f59ea
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 #1f59ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f59ea-9ca3c4-df704e-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