Color

#5877f3

#5877f3
hex#5877f3
rgbrgb(88, 119, 243)
hslhsl(228, 87%, 65%)
oklchoklch(0.611 0.189 269.5)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2174

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f3d458

#58c5f3 · #8758f3

#f35877 · #77f358

Split-complementary

Open in tool →

#f38758 · #c5f358

#f358c5 · #f3d458 · #58f387

Contrast

#5877f3 as textRatioAAAA largeAAAFix
Aaon white
3.93:1failpassfail
  • AA: use #4568f2 as the text (4.65:1)
  • AAA: use #113dee as the text (7.18:1)
  • AA: or shift the background to #171717 (4.57:1)
Aaon black
5.35:1passpassfail
  • AAA: use #7992f6 as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5877f3 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

#5877f3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5877f3
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 #5877f3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5877f3-9c9fc4-df7c4e-231f2d-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