Color

#3a7ae9

#3a7ae9
hex#3a7ae9
rgbrgb(58, 122, 233)
hslhsl(218, 80%, 57%)
oklchoklch(0.597 0.181 260.6)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.207

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e9a93a

#3ad2e9 · #513ae9

#e93a7a · #7ae93a

Split-complementary

Open in tool →

#e9513a · #d2e93a

#e93ad2 · #e9a93a · #3ae951

Contrast

#3a7ae9 as textRatioAAAA largeAAAFix
Aaon white
4.09:1failpassfail
  • AA: use #2c71e8 as the text (4.53:1)
  • AAA: use #1552bc as the text (7.08:1)
  • AA: or shift the background to #141414 (4.51:1)
Aaon black
5.14:1passpassfail
  • AAA: use #6396ee as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a7ae9 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#3a7ae9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a7ae9
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 #3a7ae9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a7ae9-9ca6c4-df644e-201f2d-e9f0f1?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