Color

#54abfc

#54abfc
hex#54abfc
rgbrgb(84, 171, 252)
hslhsl(209, 97%, 66%)
oklchoklch(0.723 0.145 249.1)
Closest name: Cerulean (#55aaee)Relative luminance 0.3804

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fca554

#54fcfa · #5457fc

#fc54ab · #abfc54

Split-complementary

Open in tool →

#fc5457 · #fcfa54

#fa54fc · #fca554 · #57fc54

Contrast

#54abfc as textRatioAAAA largeAAAFix
Aaon white
2.44:1failfailfail
  • AA: use #0374dd as the text (4.62:1)
  • AAA: use #0357a6 as the text (7.2:1)
  • AA: or shift the background to #3b3b3b (4.59:1)
  • AAA: or shift the background to #1a1a1a (7.13:1)
Aaon black
8.61:1passpasspassPasses 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 #54abfc as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#54abfc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #54abfc
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 #54abfc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/54abfc-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