Color

#01aff4

#01aff4
hex#01aff4
rgbrgb(1, 175, 244)
hslhsl(197, 99%, 48%)
oklchoklch(0.713 0.153 235.8)
Closest name: Cerulean (#55aaee)Relative luminance 0.372

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f44601

#01f4bf · #0136f4

#f401af · #aff401

Split-complementary

Open in tool →

#f40136 · #f4bf01

#bf01f4 · #f44601 · #36f401

Contrast

#01aff4 as textRatioAAAA largeAAAFix
Aaon white
2.49:1failfailfail
  • AA: use #017cad as the text (4.68:1)
  • AAA: use #015f84 as the text (7.07:1)
  • AA: or shift the background to #3b3b3b (4.5:1)
  • AAA: or shift the background to #171717 (7.2:1)
Aaon black
8.44:1passpasspassPasses 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 #01aff4 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#01aff4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #01aff4
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 #01aff4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/01aff4-9cb4c4-df4e6b-1f232d-e9f1ef?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