Seaside
Also known as: Stillwater , Nirvana Jewel , Explorer Blue , Aqua Sea
Seaside brings a cool and clear feel to a palette. This medium cyan suits water themes and healthcare apps. Match it with pink accents when the design calls for energy over calm. Accessibility-wise, it needs a dark backdrop: 7.50:1 on black clears AA.
Reference
Seaside color codes
- HEX
- #66A4B0
- RGB
- rgb(102, 164, 176)
- RGBA
- rgba(102, 164, 176, 1)
- HSL
- hsl(190, 32%, 55%)
- HSV
- hsv(190, 42%, 69%)
- CMYK
- cmyk(42%, 7%, 0%, 31%)
- LAB
- lab(63.5 -18.4 -12.9)
- OKLCH
- oklch(68.1% 0.066 211.2)
Analysis
Color intelligence
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Gamut
The full range of colors a device or space can show. sRGB is the common screen gamut; Display P3 is wider. A color outside a gamut cannot be shown accurately there and must be mapped inward.Full glossary entry →Displays accurately on every screen and translates well to print.
Temperature
Undertone
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cool
Nearest standard colors
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Delta E (ΔE)
A measure of how different two colors look. Below 1 the difference is invisible to almost everyone; below 2.3 most people can't tell them apart; above 10 they are clearly different colors. We use CIEDE2000, the modern standard.Full glossary entry →
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Delta E (ΔE)
A measure of how different two colors look. Below 1 the difference is invisible to almost everyone; below 2.3 most people can't tell them apart; above 10 they are clearly different colors. We use CIEDE2000, the modern standard.Full glossary entry →- CSS: cadetblue #5F9EA0 · ΔE 4.9
- RAL 6034: Pastel turquoise #7FB0B2 · ΔE 5.7 · approximate
RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck. Pantone's values are proprietary and device-dependent, so we don't print lookups.
Where Seaside works
- Web & UI: A supporting-cast color for UI: chart fills, tags, and empty-state illustrations, but not text.
- Interiors: Soft and low-saturation: a candidate for full walls, where vivid colors overwhelm.
- Fashion: Wears best as the statement piece, a top, scarf, or shoes, against neutral basics.
- Branding: Sits in the trust register: a natural primary for finance, health, and B2B brands.
- Interiors: Strong for a whole room, excellent in doses: an accent wall, cabinetry, or a statement chair.
- Branding: A secondary brand color by nature: it supports a stronger primary and shines in illustration.
Copy as: every ecosystem
Variations
Tints, shades, and tones of Seaside
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Tint
A color mixed with white, which raises its lightness. Pink is a tint of red. Tints feel softer and more open than the base color.Full glossary entry →
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Tint
A color mixed with white, which raises its lightness. Pink is a tint of red. Tints feel softer and more open than the base color.Full glossary entry →Tints (lighter)
Shades (darker)
Harmonies
Color harmonies
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Complementary colors
Two colors opposite each other on the wheel. They create the strongest contrast and make each other look more intense, so they work best used unevenly.Full glossary entry →
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Complementary colors
Two colors opposite each other on the wheel. They create the strongest contrast and make each other look more intense, so they work best used unevenly.Full glossary entry →Palettes built from Seaside by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Accessibility
Contrast & accessibility
Aa on white
contrast 2.80:1
AA fail AAA fail AA large fail
Aa on black
contrast 7.50:1
AA pass AAA pass AA large pass
Best text color on a Seaside background: #000000
Palettes
Palettes featuring Seaside
Seaside with its complement
Soft neighbors of Seaside
Seaside triad
Explore
Similar colors
- Atlas Cedar #5CA0A7 · ΔE 3.1
- Glacier #78B1BF · ΔE 4.4
- Rainy Mood #4499AA · ΔE 5.0
- Equanimity #83A9B3 · ΔE 5.4
- Viking #4DB1C8 · ΔE 5.5
- Thalassa #53B1BA · ΔE 5.5
Looking for maximum contrast instead? The complement of Seaside is closest to Whisky .
FAQ
Seaside FAQs
What color is Seaside?
Seaside is a medium cyan with the hex code #66A4B0. In HSL terms it has a hue of 190°, 32% saturation, and 55% lightness.
What is the hex code for Seaside?
The hex code for Seaside is #66A4B0. In RGB it's rgb(102, 164, 176), and in CMYK it's cmyk(42%, 7%, 0%, 31%).
What colors go well with Seaside?
Seaside pairs naturally with pink tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.
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