#03045E
#0077B6
#00B4D8
#90E0EF
#001D36Ink
#007C9ECerulean
#00B8C1Cyan
#90E2E0Powder Blue
Deep Cyan & Cerulean is a vivid dark, analogous color palette tagged space, cold, blue. The hues stay within 29° of each other on the color wheel, which is why the palette feels cohesive rather than busy. These are bold, punchy colors that need generous white space around them. The overall temperature is cool.
Color codes click any value to copy
| Swatch | Name | HEX | RGB | HSL | OKLCH |
|---|---|---|---|---|---|
| Ink | #001D36 | rgb(0, 29, 54) | hsl(208, 100%, 11%) | oklch(22.5% 0.060 248) | |
| Cerulean | #007C9E | rgb(0, 124, 158) | hsl(193, 100%, 31%) | oklch(54.6% 0.104 226) | |
| Cyan | #00B8C1 | rgb(0, 184, 193) | hsl(183, 100%, 38%) | oklch(71.2% 0.121 201) | |
| Powder Blue | #90E2E0 | rgb(144, 226, 224) | hsl(179, 59%, 73%) | oklch(86.0% 0.080 194) |
Why it works and how to use it
It works because the lightness range is wide (11% to 73%), which gives clear hierarchy between background, content and accents. Try it for dark-mode interfaces and gaming.
- Background: Powder Blue (#90E2E0) is the lightest color, so it belongs on large surfaces.
- Text: Ink (#001D36) on #90E2E0 gives 11.51:1, passing WCAG AAA.
- Primary: Cerulean (#007C9E) is the most saturated mid-tone; use it for buttons and links (3.23:1 against the background, fine for UI elements).
- Accent: Cyan (#00B8C1) for highlights, badges and hover states.
2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Ink on Powder Blue at 11.51:1.
Preview on a real UI see how the palette feels in context
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Design faster with Deep Cyan & Cerulean
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
#001D36
#007C9E
#00B8C1
#90E2E0
Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.
Contrast check WCAG ratios between palette colors
| Pair | Sample | Ratio | Level |
|---|---|---|---|
#001D36 on #90E2E0 | Aa | 11.51:1 | AAA |
#001D36 on #00B8C1 | Aa | 7.02:1 | AAA |
#001D36 on #007C9E | Aa | 3.56:1 | AA large only |
#007C9E on #90E2E0 | Aa | 3.23:1 | AA large only |
#007C9E on #00B8C1 | Aa | 1.97:1 | Fail |
#00B8C1 on #90E2E0 | Aa | 1.64:1 | Fail |
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