#1E3A8E
#2E5CC8
#8EA8E8
#0E1E4A
Background
Primary Accent
Secondary
Body Text

Neptune Deep Color Palette

#1E3A8E · #2E5CC8 · #8EA8E8 · #0E1E4A

Fail
WCAG Grade
1.6:1
Contrast Ratio
970
Saves
2,600
AI Copies
AI Prompt

Use #1E3A8E as the background. Use #2E5CC8 as the primary accent. Use #8EA8E8 as secondary. Use #0E1E4A as body text/supporting color. Palette mood: Neptune Deep — neptune, deep, wind.

Hex Codes, RGB & CMYK Color Values

Technical breakdown for the Neptune Deep color scheme. Use these values for web design (HEX/RGB), print projects (CMYK), or specialized design software (HSL).

Swatch Design Role HEX RGB CMYK HSL
Background
Luminance: 5.3%
30, 58, 142 79%, 59%, 0%, 44% 225°, 65%, 34%
Primary Accent
Luminance: 12.4%
46, 92, 200 77%, 54%, 0%, 22% 222°, 63%, 48%
Secondary
Luminance: 39.6%
142, 168, 232 39%, 28%, 0%, 9% 223°, 66%, 73%
Body Text
Luminance: 1.5%
14, 30, 74 81%, 59%, 0%, 71% 224°, 68%, 17%

Neptune Deep Tints & Shades

Hover states, borders and elevation need lighter and darker steps of your base colors. Here are computed tints and shades for every color in the Neptune Deep palette — click any swatch to copy its hex.

#1E3A8E saturated blue
#2E5CC8 gently saturated blue
#8EA8E8 saturated blue
#0E1E4A saturated blue

Neptune Deep Palette Contrast Matrix (WCAG 2.1)

Every color tested as text on every other color as background. Body copy needs 4.5:1 (AA), large text and UI components 3:1. AAA requires 7:1.

Text on Background Preview Ratio Grade Safe For
#0E1E4A on #8EA8E8
Aa Sample Text
6.84:1 AA Body text, UI
#8EA8E8 on #0E1E4A
Aa Sample Text
6.84:1 AA Body text, UI
#8EA8E8 on #1E3A8E
Aa Sample Text
4.35:1 Fail Large headings, UI components
#1E3A8E on #8EA8E8
Aa Sample Text
4.35:1 Fail Large headings, UI components
#0E1E4A on #2E5CC8
Aa Sample Text
2.67:1 Fail Decorative use only
#2E5CC8 on #0E1E4A
Aa Sample Text
2.67:1 Fail Decorative use only
#8EA8E8 on #2E5CC8
Aa Sample Text
2.56:1 Fail Decorative use only
#2E5CC8 on #8EA8E8
Aa Sample Text
2.56:1 Fail Decorative use only
#2E5CC8 on #1E3A8E
Aa Sample Text
1.70:1 Fail Decorative use only
#1E3A8E on #2E5CC8
Aa Sample Text
1.70:1 Fail Decorative use only
#0E1E4A on #1E3A8E
Aa Sample Text
1.57:1 Fail Decorative use only
#1E3A8E on #0E1E4A
Aa Sample Text
1.57:1 Fail Decorative use only

Neptune Deep Color Psychology & Meaning

Neptune is the deep blue giant at the edge of the solar system, its winds the fastest of any planet, and this palette is deep blue with storm azure. It feels cold and powerful, the color of the farthest world the eye can barely see.

Color Harmony: Analogous Scheme

The Neptune Deep palette is built using a analogous relationship between its hues. This ensures that even with high-contrast accents, the overall scheme feels balanced and intentional.

Hue Wheel

A analogous palette is often preferred by professional designers because it creates a calm, serene atmosphere by using neighboring colors.

History & Design Context

Neptune was discovered in 1846, predicted by mathematics before it was seen, and its winds reach 2,100 kilometers an hour; Voyager 2 flew past in 1989, and its great dark spot has since vanished and reformed.

Best Design Use Cases

Use the deep blue for the atmosphere, storm azure for the storms, pale blue for highlights, and the darkest navy for text.

Industries This Palette Suits

Space science, astronomy, education, exploration.

Colors That Pair Well With Neptune Deep

Need a fifth color? These three companions are computed from the palette's own hue positions on the color wheel, so they extend the scheme without breaking its harmony.

orange

directly opposite #2E5CC8 on the wheel — the strongest accent for CTAs and highlights when you need maximum energy

violet

30° beside #2E5CC8 — a calm secondary that extends the palette without adding tension

tinted neutral

a paper-white carrying the palette's own hue — perfect for surfaces and dividers

Using Neptune Deep Without Breaking Accessibility

  • Avoid #2E5CC8 for small UI elements on #1E3A8E — at 1.7:1 it misses the 3:1 WCAG threshold; darken it with a shade from the ramp below.
  • Don't set body copy in #0E1E4A on #1E3A8E — 1.6:1 fails WCAG AA; keep it for large decorative headings only.
  • Don't use #8EA8E8 behind body text — this light tone works better for surfaces, badges and dividers than for reading areas.

How to Implement the Neptune Deep Color Scheme

To use this Neptune Deep color palette in your web project, you can copy the following CSS variables or Tailwind CSS configuration. These roles ensure your UI maintains accessibility and visual hierarchy.

Option 1: CSS Variables

:root { 
  /* {name} Palette - ihatecolors.com */{'
'}  --color-bg: {colors[0]};{'
'}  --color-primary: {colors[1]};{'
'}  --color-secondary: {colors[2]};{'
'}  --color-text: {colors[3]};{'
'} {'}'}

Web Design Tip

Use #1E3A8E for the main background and #2E5CC8 for primary buttons. This creates a high-contrast focal point.

Accessibility Note

The contrast ratio between #0E1E4A and #1E3A8E is 1.57:1 (Fail). Ensure your body text remains legible.

Neptune Deep Palette — Frequently Asked Questions

What are the hex codes in the Neptune Deep color palette?

The Neptune Deep palette contains #1E3A8E, #2E5CC8, #8EA8E8, #0E1E4A. Click any swatch on this page to copy its value, or export all four at once as CSS variables, Tailwind config, SCSS or a Figma-ready list.

Is the Neptune Deep color palette accessible (WCAG)?

Yes for its strongest pairings: #0E1E4A on #8EA8E8 reaches 6.8:1 (AA). For body text always keep a 4.5:1 ratio and for large UI elements 3:1 — the full contrast matrix above shows the exact score for every color-on-color combination in this palette.

What colors go well with the Neptune Deep palette?

Beyond its own four colors, #C8992D, #533ABB, #EAECF0 extend it naturally: the complementary hue for high-energy accents, an analogous neighbor for calm transitions, and a tinted neutral for surfaces. All three are computed from this palette's hues on the color wheel.

What mood does the Neptune Deep palette create?

Neptune Deep reads as neptune, deep, wind. Gently saturated blue drives the personality, grounded by saturated blue — a combination that works best when the mid-tone base gets most of the canvas.

Can I use the Neptune Deep color palette commercially?

Yes. Individual color values can't be copyrighted, so the Neptune Deep palette is free for personal, client and commercial work — websites, branding, apps, print and social content, with no attribution required.

How do I add the Neptune Deep palette to Tailwind or CSS?

Use the export panel on this page: CSS variables, a Tailwind config block, SCSS variables, or a Figma copy list are generated from Neptune Deep's exact values, including the tint and shade ramps shown above.

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