Color

#334aa3

#334aa3
hex#334aa3
rgbrgb(51, 74, 163)
hslhsl(228, 52%, 42%)
oklchoklch(0.443 0.146 268.8)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0825

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a38d33

#3381a3 · #5533a3

#a3334a · #4aa333

Split-complementary

Open in tool →

#a35533 · #81a333

#a33381 · #a38d33 · #33a355

Contrast

#334aa3 as textRatioAAAA largeAAAFix
Aaon white
7.93:1passpasspassPasses AAA — no fix needed.
Aaon black
2.65:1failfailfail
  • AA: use #586fca as the text (4.54:1)
  • AAA: use #8394d8 as the text (7.19:1)
  • AA: or shift the background to #c4c4c4 (4.54:1)
  • AAA: or shift the background to #f2f2f2 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #334aa3 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

#334aa3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #334aa3
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 #334aa3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/334aa3-9c9fc4-df7c4e-231f2d-e9eff1?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