Color

#283caf

#283caf
hex#283caf
rgbrgb(40, 60, 175)
hslhsl(231, 63%, 42%)
oklchoklch(0.421 0.183 269)
Closest name: Denim (#2243b6)Relative luminance 0.0678

Tints & shades

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

Harmonies

Complementary

Open in tool →

#af9a28

#287faf · #5728af

#af283c · #3caf28

Split-complementary

Open in tool →

#af5728 · #7faf28

#af287f · #af9a28 · #28af57

Contrast

#283caf as textRatioAAAA largeAAAFix
Aaon white
8.91:1passpasspassPasses AAA — no fix needed.
Aaon black
2.36:1failfailfail
  • AA: use #596cd9 as the text (4.57:1)
  • AAA: use #8291e3 as the text (7.11:1)
  • AA: or shift the background to #bababa (4.59:1)
  • AAA: or shift the background to #e6e6e6 (7.14:1)

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

Brands using this color

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

Palettes built around it

Fonts for this mood

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

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

tool url/palettes/new/283caf-9c9ec4-df834e-231f2d-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