Color

#5871fe

#5871fe
hex#5871fe
rgbrgb(88, 113, 254)
hslhsl(231, 99%, 67%)
oklchoklch(0.608 0.21 271.2)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2104

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fee558

#58c4fe · #9258fe

#fe5871 · #71fe58

Split-complementary

Open in tool →

#fe9258 · #c4fe58

#fe58c4 · #fee558 · #58fe92

Contrast

#5871fe as textRatioAAAA largeAAAFix
Aaon white
4.03:1failpassfail
  • AA: use #4864fe as the text (4.64:1)
  • AAA: use #1034fe as the text (7.13:1)
  • AA: or shift the background to #141414 (4.57:1)
Aaon black
5.21:1passpassfail
  • AAA: use #7b8ffe as the text (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5871fe 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

#5871fe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5871fe
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 #5871fe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5871fe-9c9ec4-df834e-231f2d-e9eef1?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