Color

#283cf0

#283cf0
hex#283cf0
rgbrgb(40, 60, 240)
hslhsl(234, 87%, 55%)
oklchoklch(0.487 0.262 267.8)
Closest name: C64 Blue (#003aff)Relative luminance 0.0997

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f0dc28

#28a0f0 · #7828f0

#f0283c · #3cf028

Split-complementary

Open in tool →

#f07828 · #a0f028

#f028a0 · #f0dc28 · #28f078

Contrast

#283cf0 as textRatioAAAA largeAAAFix
Aaon white
7.01:1passpasspassPasses AAA — no fix needed.
Aaon black
2.99:1failfailfail
  • AA: use #5868f3 as the text (4.69:1)
  • AAA: use #838ff6 as the text (7.22:1)
  • AA: or shift the background to #cfcfcf (4.5:1)
  • AAA: or shift the background to #ffffff (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #283cf0 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

#283cf0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283cf0
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 #283cf0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283cf0-9d9cc4-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