Glacier
Open in tool →Three blues from ice to deep water on a pale surface — a monochromatic winter set with real depth.
Color
#2178ba
#2178ba
hex
#2178bargb
rgb(33, 120, 186)hsl
hsl(206, 70%, 43%)oklch
oklch(0.556 0.13 246.6)Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.173
Colors that go with #2178ba
Charcoal, Crimson and Goldenrod 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 #2178ba: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #2178ba — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Goldenrod #daa520
shippedGoldenrod is paired with #2178ba in 4 real palettes, including Sapphire & Gold and Open House, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #2178ba in 4 real palettes, including Fintech Trust and Console Light, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #2178ba in 5 real palettes, including Fintech Trust and Open House, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #2178ba in 6 real palettes, including PlanetScale's brand system and Launch Orange, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #2178ba in 9 real palettes, including Astro's brand system and Notion's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Sienna #a0522d
complementarySienna sits directly opposite #2178ba 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 #2178ba
Tints & shades
Harmonies
Contrast
| #2178ba as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.71:1 | pass | pass | fail |
|
Aaon black | 4.46:1 | 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 #2178ba as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#2178ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #2178ba
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 #2178ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/2178ba-9caec4-df4e56-1f212d-e9f1f1?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