#3D405B
#81B29A
#96DEFF
#F4F1DE
#2A3451Space
#4F6E9FCerulean
#9BCDEFBaby Blue
#EAF7F5Smoke
Lagoon Cerulean & Baby Blue is a analogous color palette tagged muted, cold, blue. The hues stay within 54° of each other on the color wheel, which is why the palette feels cohesive rather than busy. Neither washed out nor loud, it adapts to most contexts. The overall temperature is cool.
Color codes click any value to copy
| Swatch | Name | HEX | RGB | HSL | OKLCH |
|---|---|---|---|---|---|
| Space | #2A3451 | rgb(42, 52, 81) | hsl(225, 32%, 24%) | oklch(33.0% 0.053 269) | |
| Cerulean | #4F6E9F | rgb(79, 110, 159) | hsl(217, 34%, 47%) | oklch(53.6% 0.086 259) | |
| Baby Blue | #9BCDEF | rgb(155, 205, 239) | hsl(204, 72%, 77%) | oklch(82.5% 0.071 238) | |
| Smoke | #EAF7F5 | rgb(234, 247, 245) | hsl(171, 45%, 94%) | oklch(96.6% 0.014 186) |
Why it works and how to use it
The palette holds together thanks to its analogous hue relationship and a strong light-to-dark ladder (94% down to 24% lightness). A natural fit for websites, presentations and branding.
- Background: Smoke (#EAF7F5) is the lightest color, so it belongs on large surfaces.
- Text: Space (#2A3451) on #EAF7F5 gives 11.19:1, passing WCAG AAA.
- Primary: Baby Blue (#9BCDEF) is the most saturated mid-tone; use it for buttons and links with a border or a darker shade for contrast.
- Accent: Cerulean (#4F6E9F) for highlights, badges and hover states.
3 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Space on Smoke at 11.19:1.
Preview on a real UI see how the palette feels in context
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Design faster with Lagoon Cerulean & Baby Blue
A palette preview that turns four colors into a page, so you can judge hierarchy, contrast and mood before you commit.
Primary action SecondaryCard title
Card title
Card title
Roles are assigned by lightness.
Color blindness simulation
#2A3451
#4F6E9F
#9BCDEF
#EAF7F5
Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.
Contrast check WCAG ratios between palette colors
| Pair | Sample | Ratio | Level |
|---|---|---|---|
#2A3451 on #EAF7F5 | Aa | 11.19:1 | AAA |
#2A3451 on #9BCDEF | Aa | 7.24:1 | AAA |
#4F6E9F on #EAF7F5 | Aa | 4.71:1 | AA |
#4F6E9F on #9BCDEF | Aa | 3.04:1 | AA large only |
#2A3451 on #4F6E9F | Aa | 2.38:1 | Fail |
#9BCDEF on #EAF7F5 | Aa | 1.55:1 | Fail |
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