Color

#3aacee

#3aacee
hex#3aacee
rgbrgb(58, 172, 238)
hslhsl(202, 84%, 58%)
oklchoklch(0.71 0.139 239)
Closest name: Cerulean (#55aaee)Relative luminance 0.3658

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ee7c3a

#3aeed6 · #3a52ee

#ee3aac · #acee3a

Split-complementary

Open in tool →

#ee3a52 · #eed63a

#d63aee · #ee7c3a · #52ee3a

Contrast

#3aacee as textRatioAAAA largeAAAFix
Aaon white
2.53:1failfailfail
  • AA: use #107ab7 as the text (4.68:1)
  • AAA: use #0c5b88 as the text (7.32:1)
  • AA: or shift the background to #383838 (4.64:1)
  • AAA: or shift the background to #171717 (7.1:1)
Aaon black
8.32:1passpasspassPasses 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 #3aacee as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3aacee reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3aacee
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 #3aacee and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3aacee-9cb1c4-df4e5f-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