Color

#3da5ff

#3da5ff
hex#3da5ff
rgbrgb(61, 165, 255)
hslhsl(208, 100%, 62%)
oklchoklch(0.704 0.162 248.7)
Closest name: Cerulean (#55aaee)Relative luminance 0.3512

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ff983d

#3dfff9 · #3d44ff

#ff3da5 · #a5ff3d

Split-complementary

Open in tool →

#ff3d44 · #fff93d

#f93dff · #ff983d · #44ff3d

Contrast

#3da5ff as textRatioAAAA largeAAAFix
Aaon white
2.62:1failfailfail
  • AA: use #0075db as the text (4.6:1)
  • AAA: use #0057a3 as the text (7.26:1)
  • AA: or shift the background to #363636 (4.62:1)
  • AAA: or shift the background to #141414 (7.04:1)
Aaon black
8.02:1passpasspassPasses 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 #3da5ff as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3da5ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3da5ff
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 #3da5ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3da5ff-9cadc4-df4e51-1f212d-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