Eastern Blue is a
cool dark color with the hex code #00A4BD.
Also known as
"Calypso"
by HubSpot
.
This vibrant hue can be represented as RGB
0, 164, 189 in digital design or CMYK 100%, 13%, 0%, 26% for print applications.
Find matching Pantone color.
Currently, 1 brand uses this color in their visual identity, making it a proven choice for professional branding and web design.
Eastern Blue
#00A4BD aka “Calypso” by HubSpot
Eastern Blue color values
- HEX
- #00A4BD
- RGB
- 0, 164, 189
- HSL
- 188°, 100%, 37%
- CMYK
- 100, 13, 0, 26
Shades & tints
Darker Lighter
About this color
Eastern Blue sits at 188° on the color wheel with 100% saturation and 37% lightness, placing it in the cyan segment of the spectrum. With saturation at 100%, this is a high-chroma color: the kind that anchors palettes and demands considered placement. Its mid-range lightness positions it as a mid-tone: neither a background color nor a deep accent, but something in between.
In digital environments, Eastern Blue is rendered as rgb(0, 164, 189), where the blue channel is highest at 189, though it sits close to the other channels. High saturation combined with low lightness creates deep, jewel-toned results — useful for premium UI elements, hover states, and focused interaction areas.
For print, Eastern Blue translates to a CMYK breakdown of 100C 13M 0Y 26K. With a moderate key (26%), this color uses black to deepen the chromatic channels rather than replace them, a profile that typically holds up well in both offset and digital print. In brand applications, this exact value is specified as Calypso.
Color harmonies
Complementary
Analogous
Triadic
Split-Complementary
How to use Eastern Blue
CSS Variable
:root {
--brand-primary: #00A4BD;
--brand-primary-rgb: 0, 164, 189;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#00A4BD',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 100%
M: 13%
Y: 0%
K: 26%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(0, 164, 189)
rgba(0, 164, 189, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Brands using Eastern Blue
1 brand uses this color in their identity
Frequently asked questions
What color is #00A4BD?
#00A4BD is Eastern Blue, a cool dark color with RGB values of 0, 164, 189. It has a hue of 188°, 100%
saturation, and 37% lightness in the HSL color
space.
What is the RGB value of #00A4BD?
The RGB color code for #00A4BD is rgb(0, 164, 189). This means it contains 0 red,
164 green, and 189 blue in the RGB color model.
Is Eastern Blue a warm or cool color?
Eastern Blue (#00A4BD) is a cool color with a hue between 120-300° on the color wheel.
How do I use #00A4BD in CSS?
You can use #00A4BD in CSS with:
background-color: #00A4BD; or color: #00A4BD; or as an RGB value: rgb(0, 164, 189). For print design, use CMYK: 100%, 13%, 0%, 26%.