Color

#587eb6

#587eb6
hex#587eb6
rgbrgb(88, 126, 182)
hslhsl(216, 39%, 53%)
oklchoklch(0.589 0.097 257.9)
Closest name: steelblue (#4682b4)Relative luminance 0.2037

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b69058

#58adb6 · #6258b6

#b6587e · #7eb658

Split-complementary

Open in tool →

#b66258 · #adb658

#b658ad · #b69058 · #58b662

Contrast

#587eb6 as textRatioAAAA largeAAAFix
Aaon white
4.14:1failpassfail
  • AA: use #4e76b1 as the text (4.62:1)
  • AAA: use #3b5987 as the text (7.08:1)
  • AA: or shift the background to #121212 (4.53:1)
Aaon black
5.07:1passpassfail
  • AAA: use #7897c4 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #587eb6 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

#587eb6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #587eb6
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 #587eb6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/587eb6-9ca7c4-df5f4e-201f2d-e9f0f1?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