Color

#283da4

#283da4
hex#283da4
rgbrgb(40, 61, 164)
hslhsl(230, 61%, 40%)
oklchoklch(0.413 0.167 268.8)
Closest name: Bluebell (#333399)Relative luminance 0.0647

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a48f28

#287ba4 · #5128a4

#a4283d · #3da428

Split-complementary

Open in tool →

#a45128 · #7ba428

#a4287b · #a48f28 · #28a451

Contrast

#283da4 as textRatioAAAA largeAAAFix
Aaon white
9.16:1passpasspassPasses AAA — no fix needed.
Aaon black
2.29:1failfailfail
  • AA: use #576cd6 as the text (4.52:1)
  • AAA: use #8493e1 as the text (7.24:1)
  • AA: or shift the background to #b8b8b8 (4.62:1)
  • AAA: or shift the background to #e3e3e3 (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 #283da4 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

#283da4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283da4
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 #283da4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283da4-9c9ec4-df814e-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