Color
#5187ec
#5187ecrgb(81, 135, 236)hsl(219, 80%, 62%)oklch(0.636 0.162 261.7)Colors that go with #5187ec
Charcoal, Red 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 #5187ec: softer than #000 and cool enough to feel like part of the same palette.
Red #ff0000
triadicshippedRed completes a triad with #5187ec — 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 #5187ec in 12 real palettes, including Google's brand system and Heatwave, as the accent.
Blue #0000ff
shipped14 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #5187ec, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #5187ec: 10 real palettes, including Carrefour's brand system and Blue Mono, as the accent.
Crimson #dc143c
shippedCrimson is paired with #5187ec in 9 real palettes, including NASCAR's brand system and Pizza Hut's brand system, as the supporting colour.
Dark Orange #ff8c00
shippedDark Orange shows up next to #5187ec in 4 real palettes, including Playground and Ahrefs's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #5187ec: 11 real palettes, including Patreon's brand system and Venmo's brand system, as the supporting colour.
Real palettes that use #5187ec
Tints & shades
Harmonies
Contrast
| #5187ec as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.48:1 | fail | pass | fail | |
Aaon black | 6.03:1 | pass | 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 #5187ec as the background.
Brands using this color
Fonts for this mood
#5187ec reads as cool, vivid, technical. 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 #5187ec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/5187ec-9ca5c4-df664e-211f2d-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