Color
#266cdf
#266cdfrgb(38, 108, 223)hsl(217, 74%, 51%)oklch(0.555 0.189 260.1)Colors that go with #266cdf
Crimson, Medium Sea Green and Slate Gray 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.
Crimson #dc143c
triadicshippedCrimson completes a triad with #266cdf — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #266cdf in 4 real palettes, including Console Light and Telehealth, as the accent — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #266cdf in 4 real palettes, including Slate Workspace and Campus, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Olive Green #808000
complementaryOlive Green sits directly opposite #266cdf 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 #266cdf in 3 real palettes, including Lemon Squeezy's brand system and Heatwave, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #266cdf: softer than #000 and cool enough to feel like part of the same palette.
Orange Red #ff4500
shippedOrange Red is paired with #266cdf in 3 real palettes, including PlanetScale's brand system and Strava's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Sea Green #2e8b57
shippedSea Green is paired with #266cdf in 3 real palettes, including Netflix's brand system and Coinbase's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #266cdf
Tints & shades
Harmonies
Contrast
| #266cdf as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.89:1 | pass | pass | fail |
|
Aaon black | 4.29:1 | 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 #266cdf as the background.
Brands using this color
Fonts for this mood
#266cdf 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 #266cdf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/266cdf-9ca7c4-df624e-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