Color

#243dff

#243dff
hex#243dff
rgbrgb(36, 61, 255)
hslhsl(233, 100%, 57%)
oklchoklch(0.503 0.278 266.9)
Closest name: C64 Blue (#003aff)Relative luminance 0.1093

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ffe524

#24abff · #7824ff

#ff243d · #3dff24

Split-complementary

Open in tool →

#ff7824 · #abff24

#ff24ab · #ffe524 · #24ff78

Contrast

#243dff as textRatioAAAA largeAAAFix
Aaon white
6.59:1passpassfail
  • AAA: use #1a34ff as the text (7.05:1)
Aaon black
3.19:1failpassfail
  • AA: use #5266ff as the text (4.7:1)
  • AAA: use #808eff as the text (7.23:1)
  • AA: or shift the background to #d6d6d6 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #243dff 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

#243dff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243dff
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 #243dff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243dff-9c9cc4-df884e-241f2d-e9eef1?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