Open Seas
Also known as: Sebastian Inlet , Thistleblossom Soft Blue , Crystal Lake , Summerhouse Blue
As a soft take on cyan, Open Seas carries crisp and refreshing energy that suits healthcare apps and modern branding. Its complement lands in orange territory, which makes for striking two-color pairings. Accessibility-wise, it needs a dark backdrop: 8.82:1 on black clears AA.
Reference
Open Seas color codes
- HEX
- #83AFBC
- RGB
- rgb(131, 175, 188)
- RGBA
- rgba(131, 175, 188, 1)
- HSL
- hsl(194, 30%, 63%)
- HSV
- hsv(194, 30%, 74%)
- CMYK
- cmyk(30%, 7%, 0%, 26%)
- LAB
- lab(68.6 -12.9 -11.7)
- OKLCH
- oklch(72.7% 0.051 217.9)
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: skyblue #87CEEB · ΔE 9.4
- RAL 6034: Pastel turquoise #7FB0B2 · ΔE 5.4 · 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 Open Seas 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 Open Seas
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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 Open Seas 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 2.38:1
AA fail AAA fail AA large fail
Aa on black
contrast 8.82:1
AA pass AAA pass AA large pass
Best text color on a Open Seas background: #000000
Palettes
Palettes featuring Open Seas
Open Seas with its complement
Soft neighbors of Open Seas
Open Seas triad
Explore
Similar colors
- Equanimity #83A9B3 · ΔE 2.1
- Glacier #78B1BF · ΔE 2.6
- Juvie #8ABBD0 · ΔE 4.4
- Grauzone #85A3B2 · ΔE 5.1
- Summit #8BB6B8 · ΔE 5.2
- Aquatic #99C1CC · ΔE 5.2
Looking for maximum contrast instead? The complement of Open Seas is closest to Muddy Mire .
FAQ
Open Seas FAQs
What color is Open Seas?
Open Seas is a medium cyan with the hex code #83AFBC. In HSL terms it has a hue of 194°, 30% saturation, and 63% lightness.
What is the hex code for Open Seas?
The hex code for Open Seas is #83AFBC. In RGB it's rgb(131, 175, 188), and in CMYK it's cmyk(30%, 7%, 0%, 26%).
What colors go well with Open Seas?
Open Seas pairs naturally with orange tones from its complementary harmony, and with pink accents from its split-complementary palette. Its own tints and shades always work as a monochrome scheme.
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