Color

#2837dc

#2837dc
hex#2837dc
rgbrgb(40, 55, 220)
hslhsl(235, 72%, 51%)
oklchoklch(0.459 0.243 268.6)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0835

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dccd28

#2891dc · #7328dc

#dc2837 · #37dc28

Split-complementary

Open in tool →

#dc7328 · #91dc28

#dc2891 · #dccd28 · #28dc73

Contrast

#2837dc as textRatioAAAA largeAAAFix
Aaon white
7.86:1passpasspassPasses AAA — no fix needed.
Aaon black
2.67:1failfailfail
  • AA: use #5d68e5 as the text (4.58:1)
  • AAA: use #8991ec as the text (7.33:1)
  • AA: or shift the background to #c4c4c4 (4.51:1)
  • AAA: or shift the background to #f2f2f2 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2837dc 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

#2837dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2837dc
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 #2837dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2837dc-9e9cc4-df8d4e-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