Color

#398eef

#398eef
hex#398eef
rgbrgb(57, 142, 239)
hslhsl(212, 85%, 58%)
oklchoklch(0.643 0.166 254.2)
Closest name: dodgerblue (#1e90ff)Relative luminance 0.2645

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ef9a39

#39e9ef · #3f39ef

#ef398e · #8eef39

Split-complementary

Open in tool →

#ef3f39 · #e9ef39

#ef39e9 · #ef9a39 · #39ef3f

Contrast

#398eef as textRatioAAAA largeAAAFix
Aaon white
3.34:1failpassfail
  • AA: use #1273e2 as the text (4.59:1)
  • AAA: use #0e57aa as the text (7.09:1)
  • AA: or shift the background to #262626 (4.53:1)
Aaon black
6.29:1passpassfail
  • AAA: use #4c99f0 as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #398eef 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

#398eef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #398eef
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 #398eef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/398eef-9caac4-df564e-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