Color

#1855aa

#1855aa
hex#1855aa
rgbrgb(24, 85, 170)
hslhsl(215, 75%, 38%)
oklchoklch(0.462 0.15 258.1)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0959

Tints & shades

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

Harmonies

Complementary

Open in tool →

#aa6d18

#189daa · #2418aa

#aa1855 · #55aa18

Split-complementary

Open in tool →

#aa2418 · #9daa18

#aa189d · #aa6d18 · #18aa24

Contrast

#1855aa as textRatioAAAA largeAAAFix
Aaon white
7.19:1passpasspassPasses AAA — no fix needed.
Aaon black
2.92:1failfailfail
  • AA: use #2472e0 as the text (4.56:1)
  • AAA: use #5e98e8 as the text (7.13:1)
  • AA: or shift the background to #cfcfcf (4.62:1)
  • AAA: or shift the background to #fcfcfc (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 #1855aa as the background.

Brands using this color

Fonts for this mood

#1855aa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1855aa
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 #1855aa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1855aa-9ca8c4-df5d4e-201f2d-e9f0f1?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