Blue
Turquoise Blue (RAL 5018)
Turquoise Blue (RAL 5018)
#21888FClick to copy
Turquoise Blue (RAL 5018) Parameter Conversion Table
More converters →HEX#21888FCopy
RGBrgb(33, 136, 143)Copy
HSLhsl(184, 63%, 35%)Copy
HSV/HSBhsv(184, 77%, 56%)Copy
CMYKcmyk(77%, 5%, 0%, 44%)Copy
Turquoise Blue (RAL 5018) Color Schemes
Complementary
#21888F
Click to copy#8F2821
Click to copyAnalogous
#218F5F
Click to copy#21518F
Click to copySplit Complementary
#8F2151
Click to copy#8F5F21
Click to copyMonochromatic
#21888F
Click to copy#54BBC2
Click to copy#9FD9DD
Click to copy#0E393C
Click to copy#000000
Click to copy#000000
Click to copyTurquoise Blue (RAL 5018) WCAG Accessibility Contrast
WCAG Calculator →The contrast ratio of this color against common foreground/background colors (based on the WCAG 2.1 standard)
Sample text Aa
White background #FFFFFF
4.21 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Black background #000000
4.98 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Light gray background #F5F5F5
3.87 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Dark gray background #333333
3.00 : 1
AA NormalAA LargeAAA NormalAAA Large
Turquoise Blue (RAL 5018) Shade Variants
Gradient Generator →Lighten with White Mixed with white for a lighter, softer color
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Darken with Black Mixed with black for a deeper, heavier color
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Muted / Morandi Mixed with gray and desaturated for a sophisticated muted tone
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Turquoise Blue (RAL 5018) Color Introduction
Definition
Turquoise Blue (RAL 5018) (HEX #21888F) has the RGB value rgb(33, 136, 143), the HSL value hsl(184°, 62%, 35%) and the CMYK print value cmyk(77%, 5%, 0%, 44%). In terms of color schemes, the complement of Turquoise Blue (RAL 5018) is #8F2821, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #218F5F and #21518F that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#8F2151, #8F5F21) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Turquoise Blue (RAL 5018) uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Turquoise Blue (RAL 5018) has a contrast ratio of 4.21:1 against white and 4.98:1 against black; paired with a black background it reaches AA, making it suitable for text in dark mode.
Color Characteristics
Cyan sits between blue and green, evoking lakes, glaciers and the early morning sky. Clear and tech-savvy, it performs especially well in tech branding and summer themes. Specifically, Turquoise Blue (RAL 5018) has a lightness of 35% and a saturation of 62%, steady and powerful as a background or primary color, pairing well with light text for good readability; moreover, its saturation is moderate, keeping the color’s emotional expression without becoming overly assertive. In a word: A blue with a strong green cast.
Color Psychology
Cyan can evoke freshness, calm and trust, with a marked calming effect; psychologically it symbolizes purity, professionalism and technology. For this reason Turquoise Blue (RAL 5018) tends to leave a first impression of being fresh and pure in the viewer’s mind, and this emotional tone also defines the role it plays in design.
Best Uses
Cyan suits tech products, summer themes, cleaning and care products and any scene that needs a fresh, modern feel. In real projects, Turquoise Blue (RAL 5018) is also often used as a dark background or heading text color; in “Cyan”-themed designs, the adjacent colors or lightness gradients built around it quickly establish a cohesive, clearly layered color scheme.
Turquoise Blue (RAL 5018) Featured In
This color is included in the following color cards and color families. Click a card to browse more colors in the corresponding collection.