#E6E9EE · #3A478E · #232C66 · #0A0F2A
Use #E6E9EE as the background. Use #3A478E as the primary accent. Use #232C66 as secondary. Use #0A0F2A as body text/supporting color. Palette mood: Indigo Laboratory — cool, mono, vintage, night, moody.
Technical breakdown for the Indigo Laboratory 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: 81.3% | 230, 233, 238 | 3%, 2%, 0%, 7% | 218°, 19%, 92% | ||
| Primary Accent Luminance: 7.4% | 58, 71, 142 | 59%, 50%, 0%, 44% | 231°, 42%, 39% | ||
| Secondary Luminance: 3.1% | 35, 44, 102 | 66%, 57%, 0%, 60% | 232°, 49%, 27% | ||
| Body Text Luminance: 0.6% | 10, 15, 42 | 76%, 64%, 0%, 84% | 231°, 62%, 10% |
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 Indigo Laboratory palette — click any swatch to copy its hex.
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 |
|---|---|---|---|---|
| #0A0F2A on #E6E9EE |
Aa Sample Text
| 15.48:1 | AAA | Body text, headings, UI |
| #E6E9EE on #0A0F2A |
Aa Sample Text
| 15.48:1 | AAA | Body text, headings, UI |
| #232C66 on #E6E9EE |
Aa Sample Text
| 10.63:1 | AAA | Body text, headings, UI |
| #E6E9EE on #232C66 |
Aa Sample Text
| 10.63:1 | AAA | Body text, headings, UI |
| #3A478E on #E6E9EE |
Aa Sample Text
| 6.98:1 | AA | Body text, UI |
| #E6E9EE on #3A478E |
Aa Sample Text
| 6.98:1 | AA | Body text, UI |
| #0A0F2A on #3A478E |
Aa Sample Text
| 2.22:1 | Fail | Decorative use only |
| #3A478E on #0A0F2A |
Aa Sample Text
| 2.22:1 | Fail | Decorative use only |
| #232C66 on #3A478E |
Aa Sample Text
| 1.52:1 | Fail | Decorative use only |
| #3A478E on #232C66 |
Aa Sample Text
| 1.52:1 | Fail | Decorative use only |
| #0A0F2A on #232C66 |
Aa Sample Text
| 1.46:1 | Fail | Decorative use only |
| #232C66 on #0A0F2A |
Aa Sample Text
| 1.46:1 | Fail | Decorative use only |
The Indigo Laboratory 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.
A analogous palette is often preferred by professional designers because it creates a calm, serene atmosphere by using neighboring colors.
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.
directly opposite #3A478E on the wheel — the strongest accent for CTAs and highlights when you need maximum energy
30° beside #3A478E — a calm secondary that extends the palette without adding tension
a ink-black carrying the palette's own hue — perfect for surfaces and dividers
To use this Indigo Laboratory 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.
:root {
/* {name} Palette - ihatecolors.com */{'
'} --color-bg: {colors[0]};{'
'} --color-primary: {colors[1]};{'
'} --color-secondary: {colors[2]};{'
'} --color-text: {colors[3]};{'
'} {'}'}Use #E6E9EE for the main background and #3A478E for primary buttons. This creates a high-contrast focal point.
The contrast ratio between #0A0F2A and #E6E9EE is 15.48:1 (AAA). Ensure your body text remains legible.
The Indigo Laboratory palette contains #E6E9EE, #3A478E, #232C66, #0A0F2A. 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.
Yes for its strongest pairings: #0A0F2A on #E6E9EE reaches 15.5:1 (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.
Beyond its own four colors, #8D813A, #5A4483, #131415 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.
Indigo Laboratory reads as cool, mono, vintage. Gently saturated blue drives the personality, grounded by muted blue — a combination that works best when the very light base gets most of the canvas.
Yes. Individual color values can't be copyrighted, so the Indigo Laboratory palette is free for personal, client and commercial work — websites, branding, apps, print and social content, with no attribution required.
Use the export panel on this page: CSS variables, a Tailwind config block, SCSS variables, or a Figma copy list are generated from Indigo Laboratory's exact values, including the tint and shade ramps shown above.