Glacier
Open in tool →Three blues from ice to deep water on a pale surface — a monochromatic winter set with real depth.
Color
#2978bc
#2978bc
hex
#2978bcrgb
rgb(41, 120, 188)hsl
hsl(208, 64%, 45%)oklch
oklch(0.559 0.13 248.7)Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1754
Colors that go with #2978bc
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 #2978bc: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #2978bc — 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 #2978bc in 8 real palettes, including Wired's brand system and Lemon Squeezy's brand system, as the accent.
Blue #0000ff
shipped11 real palettes, including Pixar's brand system and Readymag's brand system put Blue beside #2978bc, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #2978bc: 7 real palettes, including Hershey's's brand system and Glacier, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #2978bc: 5 real palettes, including Astro's brand system and Deep Water, as the supporting colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #2978bc: 5 real palettes, including Apple's brand system and HashiCorp's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #2978bc: 4 real palettes, including AT&T's brand system and Wendy's's brand system, as the accent.
Real palettes that use #2978bc
Tints & shades
Harmonies
Contrast
| #2978bc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.66:1 | pass | pass | fail |
|
Aaon black | 4.51:1 | pass | 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 #2978bc as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#2978bc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #2978bc
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 #2978bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/2978bc-9cadc4-df4e51-1f212d-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