Color

#388bf0

#388bf0
hex#388bf0
rgbrgb(56, 139, 240)
hslhsl(213, 86%, 58%)
oklchoklch(0.637 0.171 255.4)
Closest name: dodgerblue (#1e90ff)Relative luminance 0.256

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f09d38

#38e7f0 · #4138f0

#f0388b · #8bf038

Split-complementary

Open in tool →

#f04138 · #e7f038

#f038e7 · #f09d38 · #38f041

Contrast

#388bf0 as textRatioAAAA largeAAAFix
Aaon white
3.43:1failpassfail
  • AA: use #1172e8 as the text (4.57:1)
  • AAA: use #0d56af as the text (7.08:1)
  • AA: or shift the background to #242424 (4.52:1)
Aaon black
6.12:1passpassfail
  • AAA: use #5099f2 as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #388bf0 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

#388bf0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #388bf0
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 #388bf0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/388bf0-9ca9c4-df584e-1f202d-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