Color
#284ffb
#284ffbrgb(40, 79, 251)hsl(229, 96%, 57%)oklch(0.526 0.256 266.3)Colors that go with #284ffb
Charcoal, Crimson 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 #284ffb: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #284ffb — 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 #284ffb in 6 real palettes, including Walmart's brand system and NBA's brand system, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #284ffb: 8 real palettes, including NHL's brand system and Nivea's brand system, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #284ffb: 9 real palettes, including Roblox's brand system and Webflow's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #284ffb: 11 real palettes, including Chase's brand system and Dairy Queen's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #284ffb: 8 real palettes, including OnePlus's brand system and Coursera's brand system, as the supporting colour.
Light Sky Blue #87cefa
shippedLight Sky Blue is paired with #284ffb in 4 real palettes, including 1password's brand system and Telehealth, as the supporting colour.
Real palettes that use #284ffb
Tints & shades
Harmonies
Contrast
| #284ffb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.83:1 | pass | pass | fail |
|
Aaon black | 3.6:1 | 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 #284ffb as the background.
Brands using this color
Fonts for this mood
#284ffb 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 #284ffb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/284ffb-9c9fc4-df7e4e-231f2d-e9eef1?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