Color
#5b91dc
#5b91dcrgb(91, 145, 220)hsl(215, 65%, 61%)oklch(0.652 0.127 256.9)Colors that go with #5b91dc
Charcoal, Amber and Blue 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 #5b91dc: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #5b91dc in 9 real palettes, including Blueprint and Heatwave, as the accent.
Blue #0000ff
shipped9 real palettes, including Qualcomm's brand system and Unity's brand system put Blue beside #5b91dc, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #5b91dc: 6 real palettes, including Blue Mono and Hershey's's brand system, as the lead colour.
Dark Orange #ff8c00
shippedDark Orange shows up next to #5b91dc in 4 real palettes, including Playground and Elastic's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #5b91dc: 6 real palettes, including Figma's brand system and Patreon's brand system.
Denim #1560bd
shippedDesigners have shipped Denim with #5b91dc: 16 real palettes, including Gopro's brand system and Apple's brand system, as the lead colour.
Medium Sea Green #3cb371
triadicshippedMedium Sea Green completes a triad with #5b91dc — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Real palettes that use #5b91dc
Tints & shades
Harmonies
Contrast
| #5b91dc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.22:1 | fail | pass | fail | |
Aaon black | 6.53:1 | 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 #5b91dc 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
#5b91dc 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 #5b91dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/5b91dc-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