Color

#58aefd

#58aefd
hex#58aefd
rgbrgb(88, 174, 253)
hslhsl(209, 98%, 67%)
oklchoklch(0.732 0.142 248.6)
Closest name: Cerulean (#55aaee)Relative luminance 0.3944

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fda858

#58fdfb · #585bfd

#fd58ae · #aefd58

Split-complementary

Open in tool →

#fd585b · #fdfb58

#fb58fd · #fda858 · #5bfd58

Contrast

#58aefd as textRatioAAAA largeAAAFix
Aaon white
2.36:1failfailfail
  • AA: use #0274de as the text (4.61:1)
  • AAA: use #0257a7 as the text (7.18:1)
  • AA: or shift the background to #3d3d3d (4.6:1)
  • AAA: or shift the background to #1c1c1c (7.21:1)
Aaon black
8.89:1passpasspassPasses 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 #58aefd as the background.

Brands using this color

Fonts for this mood

#58aefd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #58aefd
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 #58aefd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/58aefd-9cacc4-df4e4e-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