Campus
Open in tool →Institutional blue with a highlighter-amber accent — trustworthy for parents, lively enough for students.
Color
#1b4fde
#1b4fde
hex
#1b4fdergb
rgb(27, 79, 222)hsl
hsl(224, 78%, 49%)oklch
oklch(0.495 0.224 264.2)Closest name: C64 Blue (#003aff)Relative luminance 0.111
Colors that go with #1b4fde
Charcoal, Amber and Cornflower 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 #1b4fde: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #1b4fde in 7 real palettes, including Walmart's brand system and NBA's brand system, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #1b4fde: 10 real palettes, including Gopro's brand system and NBA's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #1b4fde in 17 real palettes, including Chase's brand system and Coinbase's brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #1b4fde: 6 real palettes, including Warp's brand system and Elastic's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #1b4fde: 11 real palettes, including Coursera's brand system and HashiCorp's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #1b4fde: 6 real palettes, including MLB's brand system and Nissan's brand system, as the supporting colour.
Olive Green #808000
complementaryOlive Green sits directly opposite #1b4fde on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #1b4fde
Tints & shades
Harmonies
Contrast
| #1b4fde as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.52:1 | pass | pass | fail |
|
Aaon black | 3.22:1 | 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 #1b4fde as the background.
Brands using this color
Palettes built around it
Peacock
Open in tool →Teal, cobalt and magenta at full chroma on white — jewel tones in daylight; the trick is a near-black text with a blue cast.
Fonts for this mood
#1b4fde reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #1b4fde
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 #1b4fde and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/1b4fde-9ca2c4-df724e-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