Color

#48b5ef

#48b5ef
hex#48b5ef
rgbrgb(72, 181, 239)
hslhsl(201, 84%, 61%)
oklchoklch(0.735 0.129 235.8)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.4066

Colors that go with #48b5ef

Charcoal, Dark Orange and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ef8248

#48efd6 · #4861ef

#ef48b5 · #b5ef48

Split-complementary

Open in tool →

#ef4861 · #efd648

#d648ef · #ef8248 · #61ef48

Contrast

#48b5ef as textRatioAAAA largeAAAFix
Aaon white
2.3:1failfailfail
  • AA: use #107db7 as the text (4.53:1)
  • AAA: use #0c5d88 as the text (7.15:1)
  • AA: or shift the background to #404040 (4.51:1)
  • AAA: or shift the background to #212121 (7:1)
Aaon black
9.13:1passpasspassPasses 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 #48b5ef as the background.

Brands using this color

Fonts for this mood

#48b5ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #48b5ef
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #48b5ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/48b5ef-9cb1c4-df4e62-1f222d-e9f1f0?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