Color
#6691ff
#6691ffrgb(102, 145, 255)hsl(223, 100%, 70%)oklch(0.678 0.169 266)Colors that go with #6691ff
Charcoal, Medium Sea Green and Tomato 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 #6691ff: softer than #000 and cool enough to feel like part of the same palette.
Medium Sea Green #3cb371
triadicshippedMedium Sea Green completes a triad with #6691ff — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Tomato #ff6347
triadicshippedTomato completes a triad with #6691ff — 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 #6691ff in 7 real palettes, including Blueprint and Mastodon hosted on mastodon.social's brand system, as the accent.
Blue #0000ff
shipped10 real palettes, including Qualcomm's brand system and Unity's brand system put Blue beside #6691ff, as the accent.
Dark Orange #ff8c00
shippedDark Orange shows up next to #6691ff in 4 real palettes, including Ahrefs's brand system and Playground, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #6691ff: 7 real palettes, including Blueprint and Figma's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #6691ff: 9 real palettes, including Apple's brand system and Coursera's brand system, as the accent.
Real palettes that use #6691ff
Tints & shades
Harmonies
Contrast
| #6691ff as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.97:1 | fail | fail | fail | |
Aaon black | 7.06:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6691ff 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
#6691ff reads as cool, vivid, light. 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 #6691ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/6691ff-9ca3c4-df704e-211f2d-e9eff1?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