Color
#3e73bb
#3e73bbrgb(62, 115, 187)hsl(215, 50%, 49%)oklch(0.554 0.126 256.6)Colors that go with #3e73bb
Charcoal, Sea Green and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #3e73bb: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #3e73bb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber #ffbf00
shippedAmber is paired with #3e73bb in 9 real palettes, including Wired's brand system and Lemon Squeezy's brand system, as the accent.
Blue #0000ff
shipped11 real palettes, including Pixar's brand system and Readymag's brand system put Blue beside #3e73bb, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #3e73bb: 8 real palettes, including General Mills's brand system and Glacier, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #3e73bb: 6 real palettes, including Coca-Cola's brand system and NBA's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #3e73bb in 12 real palettes, including State Farm's brand system and Marvel's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #3e73bb: 5 real palettes, including Astro's brand system and Deep Water, as the supporting colour.
Real palettes that use #3e73bb
Tints & shades
Harmonies
Contrast
| #3e73bb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.8:1 | pass | pass | fail |
|
Aaon black | 4.37:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e73bb as the background.
Brands using this color
Fonts for this mood
#3e73bb reads as cool, modern. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #3e73bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3e73bb-9ca8c4-df5d4e-201f2d-e9f0f1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md