Thalassa
Also known as: Aqueduct, Glassmith, Spearfish, Adonis
With its cool undertone, Thalassa (#53B1BA) comes across as crisp and refreshing. Designers reach for it in modern branding and tech interfaces. Reach for a red companion shade to give Thalassa maximum contrast. Against dark backgrounds it stays legible (8.37:1), but avoid it as text on white.
Thalassa color codes
- HEX
- #53B1BA
- RGB
- rgb(83, 177, 186)
- RGBA
- rgba(83, 177, 186, 1)
- HSL
- hsl(185, 43%, 53%)
- HSV
- hsv(185, 55%, 73%)
- CMYK
- cmyk(55%, 5%, 0%, 27%)
- LAB
- lab(66.8 -27.0 -13.6)
- OKLCH
- oklch(70.7% 0.089 203.8)
Color intelligence
Displays accurately on every screen and translates well to print.
Temperature
cool
Nearest standard colors
- CSS: cadetblue#5F9EA0 · ΔE 6.4
- RAL 6034 — Pastel turquoise#7FB0B2 · ΔE 6.3 · 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 Thalassa works
- Web & UI: Best as a button fill, badge, or accent — pair it with white text only at large sizes, and check contrast.
- Interiors: Strong for a whole room, excellent in doses: an accent wall, cabinetry, or a statement chair.
- 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.
- Web & UI: A supporting-cast color for UI: chart fills, tags, empty-state illustrations — not text.
- Branding: A secondary brand color by nature: it supports a stronger primary and shines in illustration.
Copy as — every ecosystem
Tints, shades, and tones of Thalassa
Tints (lighter)
Shades (darker)
Color harmonies
Palettes built from Thalassa by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Contrast & accessibility
Aa — on white
contrast 2.51:1
AA failAAA failAA large fail
Aa — on black
contrast 8.37:1
AA passAAA passAA large pass
Best text color on a Thalassa background: #000000
Palettes featuring Thalassa
Thalassa with its complement
Soft neighbors of Thalassa
Thalassa triad
Similar colors
- Glassmith#46B5C0 · ΔE 1.6
- Castaway#6DBAC0 · ΔE 3.5
- High Dive#59B9CC · ΔE 4.4
- Blue Bobbin#52B4CA · ΔE 4.8
- Viking#4DB1C8 · ΔE 5.0
- Atlas Cedar#5CA0A7 · ΔE 5.3
Looking for maximum contrast instead? The complement of Thalassa is closest to York Pink.
Thalassa FAQs
What color is Thalassa?
Thalassa is a medium cyan with the hex code #53B1BA. In HSL terms it has a hue of 185°, 43% saturation, and 53% lightness.
What is the hex code for Thalassa?
The hex code for Thalassa is #53B1BA. In RGB it's rgb(83, 177, 186), and in CMYK it's cmyk(55%, 5%, 0%, 27%).
What colors go well with Thalassa?
Thalassa pairs naturally with red tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.
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