Color

#57a8ea

#57a8ea
hex#57a8ea
rgbrgb(87, 168, 234)
hslhsl(207, 78%, 63%)
oklchoklch(0.708 0.125 245.5)
Closest name: Cerulean (#55aaee)Relative luminance 0.3597

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ea9957

#57eae3 · #575eea

#ea57a8 · #a8ea57

Split-complementary

Open in tool →

#ea575e · #eae357

#e357ea · #ea9957 · #5eea57

Contrast

#57a8ea as textRatioAAAA largeAAAFix
Aaon white
2.56:1failfailfail
  • AA: use #1979c8 as the text (4.56:1)
  • AAA: use #135b96 as the text (7.08:1)
  • AA: or shift the background to #383838 (4.58:1)
  • AAA: or shift the background to #141414 (7.19:1)
Aaon black
8.19:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #57a8ea 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

#57a8ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #57a8ea
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 #57a8ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/57a8ea-9cadc4-df4e53-1f212d-e9f1f1?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