Tints & Shades
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Scale from white (50) through Medium Aquamarine (500) to black (900), interpolated in Lab color space.
Color Values
- HEX
- #66CDAA
- RGB
- rgb(102, 205, 170)
- HSL
- hsl(160, 51%, 60%)
- OKLCH
- oklch(0.777 0.11 169)
- CMYK
- cmyk(50%, 0%, 17%, 20%)
--color-medium-aquamarinebg-[#66CDAA]Accessibility
Score: 48/100On White (#FFF)
1.93:1
On Black (#000)
10.88:1
On Light Gray (#F5F5F5)
1.77:1
Best text color on this background:
Design Applications
background-color: #66CDAA
color: #66CDAA
bg-[#66CDAA] text-[#000000]
border-left: 4px solid #66CDAA
Color Harmonies
Complementary
Nadeshiko Pink
#F6ADC6
Split-Complementary
Similar Colors
Color Meaning & Psychology
Teal occupies the sophisticated intersection of blue's trust and green's vitality. It feels calming yet distinctive — neither the corporate ubiquity of navy nor the aggressive freshness of lime green. Teal is associated with healing, emotional balance, and clarity of thought. It gained significant cultural cachet in the 2010s as a design-forward alternative to standard blues in healthcare and technology branding. Deeper teals feel luxurious and authoritative; lighter teals feel fresh and energetic. Teal is one of the few colors that reads well in both light and dark themes. Its primary challenge is legibility — teal text on white often fails WCAG AA without careful shade selection. At medium lightness, it is the most versatile tone of this hue family — readable as text on light backgrounds, yet vibrant enough as a visual accent.
Industry Usage
Common contexts and industries where Medium Aquamarine is applied in professional design.
- Healthcare technology and health apps
- Mental health and wellness platforms
- Fintech brands seeking blue-alternative trust
- Premium interior design and home accessories
- Environmental and ocean-focused organizations
- Contemporary hotel and hospitality brands
- Corporate communications departments
- Spa and beauty wellness destinations
Accessibility Considerations
Normal Text
Fails AA
4.5:1 minimum required
Large Text
Fails AA Large
3:1 minimum required
UI Components
Check contrast
3:1 for non-text UI
Medium Aquamarine is a light color. Use black (#000000) text on top of it for maximum readability (10.88:1). Avoid white text on this background.
CSS & Code Examples
Background
background-color: #66CDAA;Text
color: #66CDAA;Border
border: 2px solid #66CDAA;Box Shadow
box-shadow: 0 4px 20px #66CDAA40;Gradient
background: linear-gradient(135deg, #66CDAA, #99ffdc);Tailwind-style
--color-medium-aquamarine: #66CDAA;Tailwind CSS Utilities
Use arbitrary value syntax in Tailwind CSS to apply Medium Aquamarine without a custom config.
Background
bg-[#66CDAA]Text
text-[#66CDAA]Border
border-[#66CDAA]Ring
ring-[#66CDAA]Fill
fill-[#66CDAA]From (gradient)
from-[#66CDAA]Via (gradient)
via-[#66CDAA]To (gradient)
to-[#66CDAA]Design Tokens
Ready-to-use Medium Aquamarine design token in CSS custom properties, SCSS, Tailwind v3/v4, and JSON formats.
CSS Custom Properties
:root {
--color-medium-aquamarine: #66CDAA;
--color-medium-aquamarine-rgb: 102, 205, 170;
--color-medium-aquamarine-hsl: 160, 51%, 60%;
}SCSS Variables
$color-medium-aquamarine: #66CDAA; $color-medium-aquamarine-rgb: 102, 205, 170; $color-medium-aquamarine-hsl: 160, 51%, 60%;
Tailwind v3 Config
// tailwind.config.js
module.exports = {
theme: {
extend: {
colors: {
'medium-aquamarine': '#66CDAA',
},
},
},
};Tailwind v4 (@theme)
/* tailwind.css */
@theme {
--color-medium-aquamarine: #66CDAA;
}JSON Design Token (W3C format)
{
"medium-aquamarine": {
"value": "#66CDAA",
"type": "color",
"description": "Medium Aquamarine — #66CDAA"
}
}More teal colors
View all →What Does Medium Aquamarine Mean? Color Psychology & Cultural Symbolism
Medium Aquamarine has become one of the signature colors of contemporary digital design precisely because it fills a gap: cool enough to feel clinical and precise, but saturated enough (51%) to feel alive and modern. The result is clarity.
- Across color psychology research, teal consistently tests high for "innovation" associations, making Medium Aquamarine a reliable vehicle for clarity in cross-demographic audiences.
- Brand designers draw on teal-family tones to project modern sophistication and trustworthiness—values that Medium Aquamarine communicates in a mid-tone key.
- At 51% saturation, Medium Aquamarine reads as subdued—neither overwhelming nor passive, landing in the clarity, innovation, balance, and modern sophistication zone with measured confidence.
- Medium Aquamarine's mid-tone lightness (60%) shifts its psychological register: a balanced mid-tone that embodies clarity, innovation, balance, and modern sophistication at its most direct.
Medium Aquamarine will feel fresh for a long time because it's built on permanent values—clarity, balance, and intelligence—not trend.
How to Use Medium Aquamarine in Design: Applications, Pairings & Best Practices
Design systems built around Medium Aquamarine tend to feel contemporary, clean, and purposeful. It pairs naturally with white, dark charcoal, and almost any warm neutral, making it an extremely designer-friendly color to build a palette around.
- Avoid: traditional, conservative institutions that need to signal historical trust (navy serves better), children's products where warmer colors perform better, and food branding.
- Color harmonies: Medium Aquamarine's complementary color creates a high-energy split ideal for promotional design; its analogous palette (±30° hue) builds cohesive, monochromatic sophistication.
- Proportional use: Medium Aquamarine's subdued quality means it scales well across proportions—from full-bleed backgrounds to single-pixel borders—making it an unusually versatile palette component.
- Medium Aquamarine creates strong legibility with black text overlays (10.9:1 contrast ratio), making it a reliable background or surface color in design systems
- Typography: Medium Aquamarine as text requires a dark background; its 60% lightness means it provides 1.9:1 contrast on white, not meeting WCAG AA.
Medium Aquamarine will feel fresh for a long time because it's built on permanent values—clarity, balance, and intelligence—not trend.
Medium Aquamarine Accessibility: WCAG Contrast Ratios, Color Blindness & Inclusive Design
Medium Aquamarine (#66CDAA) achieves a 10.88:1 contrast ratio with black text, surpassing the WCAG 2.1 AAA threshold of 7:1. This exceptional contrast qualifies it for body text, UI components at any size, and all accessibility-sensitive interface contexts. Relative luminance: 49.4%.
- As text on white (#FFFFFF): 1.93:1 — Fail
- As text on black (#000000): 10.88:1 — AAA ✓
- Best text color on Medium Aquamarine background: Black (#000000) at 10.88:1
- WCAG 2.1 luminance: 49.4% — above-median luminance—it reads as a light to mid-tone background, compatible with dark text while retaining color personality
- Medium Aquamarine qualifies for all text sizes including small body copy (AAA).
- Color blindness consideration: tritanopia (blue-yellow color blindness, ~0.003% of population) may affect how this color reads. While rare, for maximum accessibility supplement color signals with text or icon indicators in critical states.
Medium Aquamarine's WCAG profile makes it a compliant choice for most text applications.
Medium Aquamarine in Industry: Branding, Design & Market Applications
Medium Aquamarine (#66CDAA) is most at home in industries where clarity, innovation, balance, and modern sophistication are key brand values. Its mid-tone quality makes it particularly effective in Healthcare Technology contexts, where the subdued saturation signals calm at exactly the right register.
- Healthcare Technology: Teal has become the signature color of healthcare technology for a specific reason: it bridges clinical trust (blue's domain) with vitality and growth (green's domain), communicating that a product is both reliable and innovative. (examples: Apple, Microsoft, Salesforce) Particularly effective for telemedicine, health tracking apps, and digital wellness platforms that need clinical credibility without institutional coldness.
- SaaS & B2B Software: The modern SaaS industry has adopted teal as an alternative to blue that signals both professionalism and innovation. It works especially well for productivity tools, data platforms, and workflow software where clarity and intelligence are the core brand values. Teal differentiates from the blue-dominated enterprise market while maintaining the trust signals B2B buyers require.
- Financial Technology: Fintech brands use teal to signal that they're reimagining financial services—keeping the trustworthiness of traditional blue but adding a freshness that traditional banks lack. The color says "we take your money seriously and we're different from old banking." (examples: Apple, Microsoft, Salesforce) Works best paired with clean white and dark charcoal for maximum fintech modernity.
- Brand positioning: Medium Aquamarine is best suited for brands projecting innovation, clarity, balance. Categories outside this positioning—traditional—tend to see weaker results.
- Adjacent applications: Beyond primary industries, Medium Aquamarine works effectively in health tech platforms, modern SaaS UIs, financial dashboards—contexts where calm serves a secondary but reinforcing role.
The industries where Medium Aquamarine performs best are those where the audience expects calm. Build brand strategy around this alignment, not against it.
Accessibility & Design Guides
Frequently Asked Questions
- What is the hex code for Medium Aquamarine? ▾
- The hex code for Medium Aquamarine is #66CDAA. Its RGB values are rgb(102, 205, 170) and its HSL values are hsl(160, 51%, 60%).
- What does Medium Aquamarine mean in design? ▾
- Teal occupies the sophisticated intersection of blue's trust and green's vitality. It feels calming yet distinctive — neither the corporate ubiquity of navy nor the aggressive freshness of lime green. Teal is associated with healing, emotional balance, and clarity of thought. It gained significant cultural cachet in the 2010s as a design-forward alternative to standard blues in healthcare and technology branding. Deeper teals feel luxurious and authoritative; lighter teals feel fresh and energetic. Teal is one of the few colors that reads well in both light and dark themes. Its primary challenge is legibility — teal text on white often fails WCAG AA without careful shade selection. At medium lightness, it is the most versatile tone of this hue family — readable as text on light backgrounds, yet vibrant enough as a visual accent.
- Is Medium Aquamarine WCAG accessible? ▾
- Medium Aquamarine (#66CDAA) does not pass WCAG AA on white (1.93:1 ratio). Use it on dark backgrounds where it achieves 10.88:1. Its overall accessibility score is 48/100.
- What colors go well with Medium Aquamarine? ▾
- Medium Aquamarine pairs well with its complementary color Nadeshiko Pink (#F6ADC6). Analogous colors like Hunter Green and Sea Green also work harmoniously. Check the Color Harmonies section above for the full palette.
- What is Medium Aquamarine used for? ▾
- Medium Aquamarine is commonly used for: Healthcare technology and health apps; Mental health and wellness platforms; Fintech brands seeking blue-alternative trust; Premium interior design and home accessories; Environmental and ocean-focused organizations.
- What are the CSS and Tailwind values for Medium Aquamarine? ▾
- In CSS, use `color: #66CDAA` or `background-color: #66CDAA`. The CSS custom property is `--color-medium-aquamarine: #66CDAA`. In Tailwind CSS, use the arbitrary value class `bg-[#66CDAA]` for backgrounds or `text-[#66CDAA]` for text.