Color

#375eb9

#375eb9
hex#375eb9
rgbrgb(55, 94, 185)
hslhsl(222, 54%, 47%)
oklchoklch(0.504 0.15 264.2)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1232

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b99237

#379fb9 · #5137b9

#b9375e · #5eb937

Split-complementary

Open in tool →

#b95137 · #9fb937

#b9379f · #b99237 · #37b951

Contrast

#375eb9 as textRatioAAAA largeAAAFix
Aaon white
6.06:1passpassfail
  • AAA: use #3154a5 as the text (7.14:1)
Aaon black
3.46:1failpassfail
  • AA: use #4e73ca as the text (4.63:1)
  • AAA: use #7996d7 as the text (7.16:1)
  • AA: or shift the background to #dedede (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #375eb9 as the background.

Brands using this color

Fonts for this mood

#375eb9 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #375eb9
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 #375eb9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/375eb9-9ca3c4-df6e4e-211f2d-e9eff1?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