Color

#587bf9

#587bf9
hex#587bf9
rgbrgb(88, 123, 249)
hslhsl(227, 93%, 66%)
oklchoklch(0.623 0.192 268.6)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2308

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f9d658

#58cbf9 · #8558f9

#f9587b · #7bf958

Split-complementary

Open in tool →

#f98558 · #cbf958

#f958cb · #f9d658 · #58f985

Contrast

#587bf9 as textRatioAAAA largeAAAFix
Aaon white
3.74:1failpassfail
  • AA: use #3f67f8 as the text (4.66:1)
  • AAA: use #093cf6 as the text (7.03:1)
  • AA: or shift the background to #1c1c1c (4.56:1)
Aaon black
5.62:1passpassfail
  • AAA: use #7592fa as the text (7.25:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #587bf9 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

#587bf9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #587bf9
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 #587bf9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/587bf9-9ca0c4-df7a4e-221f2d-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