Color

#281dc9

#281dc9
hex#281dc9
rgbrgb(40, 29, 201)
hslhsl(244, 75%, 45%)
oklchoklch(0.408 0.242 270.7)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0555

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bdc91d

#1d67c9 · #7e1dc9

#c9281d · #1dc928

Split-complementary

Open in tool →

#c97e1d · #67c91d

#c91d67 · #bdc91d · #1dc97e

Contrast

#281dc9 as textRatioAAAA largeAAAFix
Aaon white
9.96:1passpasspassPasses AAA — no fix needed.
Aaon black
2.11:1failfailfail
  • AA: use #6c63e9 as the text (4.6:1)
  • AAA: use #928bee as the text (7.15:1)
  • AA: or shift the background to #b0b0b0 (4.59:1)
  • AAA: or shift the background to #d9d9d9 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281dc9 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

#281dc9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281dc9
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 #281dc9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281dc9-a39cc4-dfa24e-261f2d-e9edf1?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