Color

#258ecb

#258ecb
hex#258ecb
rgbrgb(37, 142, 203)
hslhsl(202, 69%, 47%)
oklchoklch(0.618 0.129 240.3)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2405

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cb6225

#25cbb4 · #253bcb

#cb258e · #8ecb25

Split-complementary

Open in tool →

#cb253b · #cbb425

#b425cb · #cb6225 · #3bcb25

Contrast

#258ecb as textRatioAAAA largeAAAFix
Aaon white
3.61:1failpassfail
  • AA: use #207cb1 as the text (4.59:1)
  • AAA: use #195e86 as the text (7.03:1)
  • AA: or shift the background to #1f1f1f (4.56:1)
Aaon black
5.81:1passpassfail
  • AAA: use #399fdb as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #258ecb 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

#258ecb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #258ecb
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 #258ecb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/258ecb-9cb1c4-df4e5f-1f222d-e9f1f0?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