Color

#587fd5

#587fd5
hex#587fd5
rgbrgb(88, 127, 213)
hslhsl(221, 60%, 59%)
oklchoklch(0.608 0.138 264.3)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2206

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d5ad58

#58bed5 · #6f58d5

#d5587f · #7fd558

Split-complementary

Open in tool →

#d56f58 · #bed558

#d558be · #d5ad58 · #58d56f

Contrast

#587fd5 as textRatioAAAA largeAAAFix
Aaon white
3.88:1failpassfail
  • AA: use #4773d1 as the text (4.52:1)
  • AAA: use #2b54ab as the text (7.1:1)
  • AA: or shift the background to #171717 (4.62:1)
Aaon black
5.41:1passpassfail
  • AAA: use #7495dc as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #587fd5 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

#587fd5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #587fd5
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 #587fd5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/587fd5-9ca4c4-df6b4e-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