Color

#308ce8

#308ce8
hex#308ce8
rgbrgb(48, 140, 232)
hslhsl(210, 80%, 55%)
oklchoklch(0.632 0.162 252.1)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2521

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e88c30

#30e8e8 · #3030e8

#e8308c · #8ce830

Split-complementary

Open in tool →

#e83030 · #e8e830

#e830e8 · #e88c30 · #30e830

Contrast

#308ce8 as textRatioAAAA largeAAAFix
Aaon white
3.48:1failpassfail
  • AA: use #1775d3 as the text (4.64:1)
  • AAA: use #1259a1 as the text (7.07:1)
  • AA: or shift the background to #212121 (4.63:1)
Aaon black
6.04:1passpassfail
  • AAA: use #4799eb as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #308ce8 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

#308ce8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #308ce8
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 #308ce8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/308ce8-9cabc4-df514e-1f202d-e9f1f1?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