#1E5A8A
#0E2E4E
#5E9EC0
#F0E0B8
Background
Primary Accent
Secondary
Body Text

Blue Hole Color Palette

#1E5A8A · #0E2E4E · #5E9EC0 · #F0E0B8

AA
WCAG Grade
5.6:1
Contrast Ratio
725
Saves
3,232
AI Copies
AI Prompt

Use #1E5A8A as the background. Use #0E2E4E as the primary accent. Use #5E9EC0 as secondary. Use #F0E0B8 as body text/supporting color. Palette mood: Blue Hole — ocean, tropical, cool, moody.

Hex Codes, RGB & CMYK Color Values

Technical breakdown for the Blue Hole 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: 9.4%
30, 90, 138 78%, 35%, 0%, 46% 207°, 64%, 33%
Primary Accent
Luminance: 2.6%
14, 46, 78 82%, 41%, 0%, 69% 210°, 70%, 18%
Secondary
Luminance: 30.6%
94, 158, 192 51%, 18%, 0%, 25% 201°, 44%, 56%
Body Text
Luminance: 75.3%
240, 224, 184 0%, 7%, 23%, 6% 43°, 65%, 83%

Blue Hole 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 Blue Hole palette — click any swatch to copy its hex.

#1E5A8A gently saturated cyan-blue
#0E2E4E saturated cyan-blue
#5E9EC0 gently saturated cyan-blue
#F0E0B8 saturated orange

Blue Hole 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
#F0E0B8 on #0E2E4E
Aa Sample Text
10.57:1 AAA Body text, headings, UI
#0E2E4E on #F0E0B8
Aa Sample Text
10.57:1 AAA Body text, headings, UI
#F0E0B8 on #1E5A8A
Aa Sample Text
5.57:1 AA Body text, UI
#1E5A8A on #F0E0B8
Aa Sample Text
5.57:1 AA Body text, UI
#5E9EC0 on #0E2E4E
Aa Sample Text
4.69:1 AA Body text, UI
#0E2E4E on #5E9EC0
Aa Sample Text
4.69:1 AA Body text, UI
#5E9EC0 on #1E5A8A
Aa Sample Text
2.47:1 Fail Decorative use only
#1E5A8A on #5E9EC0
Aa Sample Text
2.47:1 Fail Decorative use only
#F0E0B8 on #5E9EC0
Aa Sample Text
2.25:1 Fail Decorative use only
#5E9EC0 on #F0E0B8
Aa Sample Text
2.25:1 Fail Decorative use only
#0E2E4E on #1E5A8A
Aa Sample Text
1.90:1 Fail Decorative use only
#1E5A8A on #0E2E4E
Aa Sample Text
1.90:1 Fail Decorative use only

Blue Hole Color Psychology & Meaning

A blue hole is a marine sinkhole whose deep blue disc sits inside pale shallow water, a circle cut out of a shallow reef, and this palette is blue hole with shallow rim. It feels mysterious and sudden, the color of deep water in the middle of a lagoon.

Color Harmony: Split-Complementary Scheme

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

Hue Wheel

A split-complementary palette is often preferred by professional designers because it balances visual interest with cohesion.

History & Design Context

Blue holes are flooded caves and sinkholes; the Great Blue Hole off Belize is over 120 metres deep and was made famous by Jacques Cousteau, who named it one of the world's top dive sites in 1971.

Best Design Use Cases

Use the blue hole for large surfaces, deep shaft for links and buttons, shallow rim for fine details, and sand rim for text.

Industries This Palette Suits

Aquariums, conservation, seafood, coastal real estate.

Colors That Pair Well With Blue Hole

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 #0E2E4E on the wheel — the strongest accent for CTAs and highlights when you need maximum energy

blue

30° beside #0E2E4E — 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 Blue Hole Without Breaking Accessibility

  • Avoid #0E2E4E for small UI elements on #1E5A8A — at 1.9:1 it misses the 3:1 WCAG threshold; darken it with a shade from the ramp below.
  • Set body text in #F0E0B8 — 5.6:1 against #1E5A8A passes WCAG AA (AA) for long-form reading.
  • Don't use #5E9EC0 behind body text — this light tone works better for surfaces, badges and dividers than for reading areas.

How to Implement the Blue Hole Color Scheme

To use this Blue Hole 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 #1E5A8A for the main background and #0E2E4E for primary buttons. This creates a high-contrast focal point.

Accessibility Note

The contrast ratio between #F0E0B8 and #1E5A8A is 5.57:1 (AA). Ensure your body text remains legible.

Blue Hole Palette — Frequently Asked Questions

What are the hex codes in the Blue Hole color palette?

The Blue Hole palette contains #1E5A8A, #0E2E4E, #5E9EC0, #F0E0B8. 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 Blue Hole color palette accessible (WCAG)?

Yes for its strongest pairings: #F0E0B8 on #0E2E4E reaches 10.6:1 (AAA). 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 Blue Hole palette?

Beyond its own four colors, #98591B, #121249, #EAEDF0 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 Blue Hole palette create?

Blue Hole reads as ocean, tropical, cool. Saturated cyan-blue drives the personality, grounded by gently saturated cyan-blue — a combination that works best when the mid-tone base gets most of the canvas.

Can I use the Blue Hole color palette commercially?

Yes. Individual color values can't be copyrighted, so the Blue Hole 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 Blue Hole 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 Blue Hole's exact values, including the tint and shade ramps shown above.

Similar Palettes

Live Preview
Generate Similar ✦
Skip to content