Arctic
Open in tool →Navy type on white with an ice-blue accent: crisp and corporate without going grey.
Color
#28a4eb
#28a4eb
hex
#28a4ebrgb
rgb(40, 164, 235)hsl
hsl(202, 83%, 54%)oklch
oklch(0.687 0.146 240.3)Closest name: Cerulean (#55aaee)Relative luminance 0.33
Colors that go with #28a4eb
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 #28a4eb: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #28a4eb in 6 real palettes, including Salesforce's brand system and NBA's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #28a4eb in 5 real palettes, including Unity's brand system and Warp's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #28a4eb in 4 real palettes, including Apple's brand system and Coca-Cola's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Light Sky Blue #87cefa
shippedLight Sky Blue is paired with #28a4eb in 4 real palettes, including Calm's brand system and Salesforce's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Medium Sea Green #3cb371
triadicshippedMedium Sea Green completes a triad with #28a4eb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Midnight Blue #191970
shippedMidnight Blue is paired with #28a4eb in 7 real palettes, including Kraken's brand system and Blue Mono, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #28a4eb in 7 real palettes, including Figma's brand system and Cursor's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #28a4eb
Tints & shades
Harmonies
Contrast
| #28a4eb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.76:1 | fail | fail | fail | |
Aaon black | 7.6:1 | 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 #28a4eb as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#28a4eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #28a4eb
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #28a4eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/28a4eb-9cb1c4-df4e5f-1f222d-e9f1f0?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