Color

#283cbd

#283cbd
hex#283cbd
rgbrgb(40, 60, 189)
hslhsl(232, 65%, 45%)
oklchoklch(0.435 0.201 268.8)
Closest name: Denim (#2243b6)Relative luminance 0.0736

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bda928

#2887bd · #5f28bd

#bd283c · #3cbd28

Split-complementary

Open in tool →

#bd5f28 · #87bd28

#bd2887 · #bda928 · #28bd5f

Contrast

#283cbd as textRatioAAAA largeAAAFix
Aaon white
8.5:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #5b6cdc as the text (4.62:1)
  • AAA: use #8592e5 as the text (7.24:1)
  • AA: or shift the background to #bdbdbd (4.52:1)
  • AAA: or shift the background to #ebebeb (7.13:1)

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

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

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

tool url/palettes/new/283cbd-9c9dc4-df864e-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