Color

#283be6

#283be6
hex#283be6
rgbrgb(40, 59, 230)
hslhsl(234, 79%, 53%)
oklchoklch(0.475 0.251 268.1)
Closest name: C64 Blue (#003aff)Relative luminance 0.0929

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e6d328

#289ae6 · #7428e6

#e6283b · #3be628

Split-complementary

Open in tool →

#e67428 · #9ae628

#e6289a · #e6d328 · #28e674

Contrast

#283be6 as textRatioAAAA largeAAAFix
Aaon white
7.35:1passpasspassPasses AAA — no fix needed.
Aaon black
2.86:1failfailfail
  • AA: use #5b69ec as the text (4.68:1)
  • AAA: use #848ff1 as the text (7.18:1)
  • AA: or shift the background to #cccccc (4.57:1)
  • AAA: or shift the background to #fafafa (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #283be6 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

#283be6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283be6
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 #283be6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283be6-9d9cc4-df8a4e-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