Shades are created by adding black to or removing lightness from a particular color. For #21fefb, its pure hue is 179.2° on the color wheel and its saturation is 99.1%, and its lightness is 56.3%. As the amount of black is added to this hue and we reduce its lightness, the result is increasingly darker shades tints. The palette given below provides 9 different shades of #21fefb, which — excluding black and our original color — range from #04201f to #1ddedc.
#21fefb Color Information
Details | Shades, Tints, and Tones | Variations | Color Coordinates |
Color Schemes | HTML+CSS Examples | Coding & Programming | Color Blindness |
Accessibility | Related Colors
The hexadecimal value (hex value) of this color is #21fefb. In RGB, it consists of 12.9% Red, 99.6% Green, and 98.4% Blue. Likewise, in the CMYK color space, it consists of 87% Cyan, 0% Magenta, 1.2% Yellow, and 0.4% Black. On the color wheel, its Hue is found at 179.2°, with saturation of 99.1% and lightness of 56.3%. The decimal value for #21fefb is 2227963, and its nearest "web safe" color is #33ffff. In the RGB color space, the strongest component for #21fefb is green. In the CMYK color space, its strongest component is cyan. And in the RYB color space, its strongest component is blue.
The hexadecimal value (hex value) of this color is #21fefb. In RGB, it consists of 12.9% Red, 99.6% Green, and 98.4% Blue. Likewise, in the CMYK color space, it consists of 87% Cyan, 0% Magenta, 1.2% Yellow, and 0.4% Black. On the color wheel, its Hue is found at 179.2°, with saturation of 99.1% and lightness of 56.3%. The decimal value for #21fefb is 2227963, and its nearest "web safe" color is #33ffff. In the RGB color space, the strongest component for #21fefb is green. In the CMYK color space, its strongest component is cyan. And in the RYB color space, its strongest component is blue.
- HexHex code for this color
- NameThe common name of this color
- RGBRed, Green, Blue composition for this color
- RGB PercentPercent Red, Green, Blue composition for this color
- CMYCyan, Magenta, Yellow composition for this color
- CMYKCyan, Magenta, Yellow, Black composition for this color
- HSLHue, Saturation, Lightness combination for this color
- HSV (or HSB)Hue, Saturation, Brightness combination for this color
- XYZCIE 1931 color space XYZ coordinates for this color
- RYBRed, Yellow, Blue composition for this color
- DecimalDecimal representation of this color's hex code
- CIE-LABCIELAB color space coordinates for this color
- CIE-LCHCIE-LCH color space coordinates for this color (chroma, hue, etc.)
- CIE-LUVCIE-LUV color space coordinates for this color
- Hunter LabHunter-Lab color space coordinates for this color
- xyYCIE xyY color space coordinates for this color
- AndroidValue of this color in Android development
- Web SafeHex code of the nearest "web safe" version of this color
Last Updated: May 14, 2025
Tints of #21fefb
Tints are created by adding white or lightness to a particular color. For #21fefb, its pure hue is 179.2° on the color wheel and its saturation is 99.1%, and its lightness is 56.3%. As the amount of white (lightness) is added to this hue, the result is increasingly lighter tints. The following palette gives 9 different tints of #21fefb, which — excluding white and our original color — range from #3dfefc to #e3ffff.
Tones of #21fefb
Tones are the result of adding gray to a pure hue. In the case of #21fefb, its pure hue is 179.2° on the color wheel and its saturation is 99.1%, so we increase this saturation to create more colorful tones, and decrease the saturation to create grayer tones. The palette shown below gives 9 different tones of #21fefb, which range from #909090 (the grayest / 0% saturation) to #20fffc (the most colorful / 100% saturation).
Variations of #21fefb
There are several ways to create color variations and premutations of #21fefb! For #21fefb, there are 6 variations of the color that can be created by swapping its Red, Green, and Blue color positions, of which 5 are different from our original color. Among these six variations, there are 6 unique colors including our original color, #21fefb. Click on these colors to learn more about them, too!
Color Coordinates of #21fefb
This color, #21fefb, consists of 12.9% Red, 99.6% Green, and 98.4% Blue, resulting in color coordinates Red = 33, Green = 254, Blue = 251. Likewise, the CMYK color space composition for #21fefb is 87% Cyan, 0% Magenta, 1.2% Yellow, and 0.4% Black. These values are shown in the following charts and tables.
R12.9%
C87.0%
G99.6%
M0.0%
B98.4%
Y1.2%
K0.4%
| Color Base | R (Red) | G (Green) | B (Blue) |
|---|---|---|---|
| Decimal | 33 | 254 | 251 |
| Octal | 41 | 376 | 373 |
| Hexa | #21 | #fe | #fb |
| Binary | 00100001 | 11111110 | 11111011 |
| Color Base | C (Cyan) | M (Magenta) | Y (Yellow) | Y (Black) |
|---|---|---|---|---|
| Decimal | 87 | 0 | 1 | 0 |
| Octal | 127 | 0 | 1 | 0 |
| Hexa | #57 | #00 | #01 | #00 |
| Binary | 01010111 | 00000000 | 00000001 | 00000000 |
Analogous Colors of #21fefb
Analogous colors are located 30 degrees away from a color's hue on the color wheel. For #21fefb — which has hue 179.2° — its analogous colors are located at 149.2° and 209.2° on the color wheel, with the same saturation and lightness as #21fefb.
Triadic Colors of #21fefb
Triadic colors are located 120 degrees away from a color's hue on the color wheel, which means the original color and its triadic colors are equidistant from one another on the color wheel and form a triangle. For #21fefb — which has hue 179.2° — its triadic colors are located at 59.2° and 299.2° on the color wheel, with the same saturation and lightness as #21fefb.
Complementary Color of #21fefb
A complementary color is located opposite a color on the color wheel (180 degrees away). For #21fefb — which has hue 179.2° — its complementary color is located at 359.2° on the color wheel, with the same saturation and lightness as #21fefb.
Split Complementary Colors of #21fefb
Split complementary colors are the analogs of a color's complement, which places them 210 degrees away on the color wheel from an original color. For #21fefb — which has hue 179.2° — its split complementary colors its split complementary colors are located at 29.2° and 329.2° on the color wheel, with the same saturation and lightness as #21fefb.
Tetradic Colors of #21fefb
Tetradic colors are two sets of complementary colors on either side of a color wheel from each other, forming a rectangle on the color wheel. For #21fefb — which has hue 179.2° — its tetradic colors are located at 89.2°, 179.2°, 269.2°, and 359.2° on the color wheel, with the same saturation and lightness as #21fefb.
Monochromatic Colors of #21fefb
Monochromatic colors are colors that share a common hue but that have different saturations and lightness. For #21fefb, we show 9 different monochromatic colors of it, ranging from #01aeac — (which has very low saturation and very low lightness) — to #90fffd (which has a very high saturation and very high lightness).
HTML+CSS Examples & Previews of #21fefb
We want to make getting started with #21fefb on your website fast and easy! Below are 8 examples of how to integrate #21fefb into a website using HTML+CSS. These examples include showing how #21fefb can be used to color text, backgrounds, shadows, and borders, as well as how it can be used as a solid fill or gradient fill for rectangles. These examples principally make use of <span> and <div> tags, although the CSS shown in particular can be repurposed to make use of #21fefb with other HTML elements.
#21fefb Foreground / Text Color
The color of this text is #21fefb.
<span style="color: #21fefb;">The color of this text is #21fefb.</span>#21fefb Background Color
The background color for this text is #21fefb.
<div style="background-color: #21fefb; width:100%; height:100%; display: flex; justify-content: center; align-items: center;">The background color for this text is #21fefb.</div>#21fefb Text Shadow Color
This color for the shadow of this text is #21fefb.
<span style="text-shadow: 3px 3px 3px #21fefb;">This color for the shadow of this text is #21fefb.</span>#21fefb Border Color
This is a div with border color #21fefb.
<div style="border: #21fefb 4px solid;width:100%; height:100%; display: flex; justify-content: center; align-items: center;">This is a div with border color #21fefb.</div>#21fefb Color Rectangle on a White Background
This is a rectangle of color #21fefb on a white background.
<div style="background-color: #ffffff; padding: 60px; width:100%; height: 100%;"><div style="background-color: #21fefb; width:100%; height:100%; padding: 10px; display: flex; justify-content: center; align-items: center;">This is a rectangle of color #21fefb on a white background.</div></div>#21fefb Color Rectangle on a Black Background
This is a rectangle of color #21fefb on a black background.
<div style="background-color: #000000; padding: 60px; width:100%; height: 100%;"><div style="background-color: #21fefb; width:100%; height:100%; padding: 10px; display: flex; justify-content: center; align-items: center;">This is a rectangle of color #21fefb on a black background.</div></div>Gradient from #21fefb to White
This is a gradient from #21fefb to white.
<div style="background: -webkit-linear-gradient(left,#21fefb,white); /* Firefox */ background: linear-gradient(to right,#21fefb,white); /* Safari */ background: -o-linear-gradient(left,#21fefb,white); /* Opera */ background: -moz-linear-gradient(left,#21fefb,white); width:100%; height:100%; display: flex; justify-content: center; align-items: center;">This is a gradient from #21fefb to white.</div>Gradient from #21fefb to Black
This is a gradient from #21fefb to black.
<div style="background: -webkit-linear-gradient(left,#21fefb,black); /* Firefox */ background: linear-gradient(to right,#21fefb,black); /* Safari */ background: -o-linear-gradient(left,#21fefb,black); /* Opera */ background: -moz-linear-gradient(left,#21fefb,black); color: #ffffff; width:100%; height:100%; display: flex; justify-content: center; align-items: center;">This is a gradient from #21fefb to black.</div>Coding & Programming with #21fefb
In addition to using #21fefb on the web, we know you might want to use it in your mobile and desktop apps, too. Whatever your needs, the table below shows how to access #21fefb in the language and environment of your choice. These code snippets are principally the hexadecimal representation of #21fefb, or the RGB color coordinates for the same (Red = 33, Green = 254, Blue = 251). If you need details about the color coordinates of #21fefb in other color spaces, refer to these details as provided toward the top of this page.
| Language | Environment | Code Snippet |
|---|---|---|
| HTML + CSS (Hex Code) | Web | #21fefb |
| HTML + CSS (RGB Code) | Web | rgb(33, 254, 251) |
| CSS Background Color | Web | .myclass { background-color: #21fefb; } |
| CSS Foreground + Text Color | Web | .myclass { color: #21fefb; } |
| CSS Border Color | Web | .myclass { border: 2px solid #21fefb; } |
| Java | (Multi-platform) | new Color(33, 254, 251); |
| Python | (Multi-platform) | Color("#21fefb") |
| Swift | iOS | UIColor(red:33, green:254, blue:251, alpha:1.0000) |
| Objective-C (iOS) | iOS | [UIColor colorWithRed:33 green:254 blue:251 alpha:1.0000]; |
| OpenGL | (Graphics) | glColor3f(33f, 254f, 251f); |
| C# / .NET | Windows | Color.FromArgb(33, 254, 251); |
#21fefb Color Blindness
Not everyone can see #21fefb the same way. For those with color blindness, #21fefb might look very, very different. Here, we simulate eight examples of color blindness, and how #21fefb looks next to each one of them. In all cases, #21fefb is placed in a circle in the upper-left corner of each of the below boxes, with the color in the rest of those boxes signifying how #21fefb looks for someone with that type of color blindness. Many people will perceive close similarities between the colors in these boxes and the colors in the circles — with some noticing particular similarities. We offer this insight so that as you make choices about colors to use for your purposes, you can make an informed decision about whether #21fefb will be a good fit for everyone in your audience!
Trichromacy
Protanomaly
Affects 1 in 100 Men & 1 in 10,000 Women
Deuteranomaly
Affects 1 in 17 Men & 1 in 250 Women
Tritanomaly
Affects 1 in 10,000
Dichromacy
Protanopia
Affects 1 in 100, Mostly Men
Deuteranopia
Affects 1 in 100, Mostly Men
Tritanopia
Affects 1 in 100,000
Accessibility
Not Accessibility Recommended
We analyzed whether #21fefb is an accessible color when used as a text / foreground color against a white background. This analysis is based on the Web Content Accessibility Guidelines (WCAG) 2 Level issued by W3C. Based on this analysis, we calculate a contrast ratio against white of approximately 1.3:1 against white. Under both the AA and AAA level standards, this is not a high enough ratio to be considered accessible for either normal size or large text.