Color

#2957ff

#2957ff
hex#2957ff
rgbrgb(41, 87, 255)
hslhsl(227, 100%, 58%)
oklchoklch(0.543 0.252 265.7)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1451

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ffd129

#29c2ff · #6529ff

#ff2957 · #57ff29

Split-complementary

Open in tool →

#ff6529 · #c2ff29

#ff29c2 · #ffd129 · #29ff65

Contrast

#2957ff as textRatioAAAA largeAAAFix
Aaon white
5.38:1passpassfail
  • AAA: use #0037ff as the text (7.02:1)
Aaon black
3.9:1failpassfail
  • AA: use #3d67ff as the text (4.58:1)
  • AAA: use #708fff as the text (7.06:1)
  • AA: or shift the background to #ebebeb (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2957ff as the background.

Brands using this color

Fonts for this mood

#2957ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2957ff
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 #2957ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2957ff-9ca0c4-df7a4e-221f2d-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