Color
#667dd1
#667dd1rgb(102, 125, 209)hsl(227, 54%, 61%)oklch(0.61 0.13 270.6)Colors that go with #667dd1
Charcoal, Sea Green and Copper 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 #667dd1: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #667dd1 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Copper #b87333
complementaryshippedCopper sits directly opposite #667dd1 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #667dd1 in 13 real palettes, including Google's brand system and Blueprint, as the accent.
Blue #0000ff
shipped11 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #667dd1, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #667dd1: 10 real palettes, including Hershey's's brand system and General Mills's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #667dd1 in 11 real palettes, including Marvel's brand system and NASCAR's brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #667dd1: 9 real palettes, including Astro's brand system and Telegram's brand system, as the supporting colour.
Real palettes that use #667dd1
Tints & shades
Harmonies
Contrast
| #667dd1 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.88:1 | fail | pass | fail | |
Aaon black | 5.42:1 | 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 #667dd1 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
#667dd1 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 #667dd1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/667dd1-9ca0c4-df7a4e-221f2d-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