#181b21 Color Information

In a RGB color space, hex #181b21 is composed of 9.4% red, 10.6% green and 12.9% blue. Whereas in a CMYK color space, it is composed of 27.3% cyan, 18.2% magenta, 0% yellow and 87.1% black. It has a hue angle of 220 degrees, a saturation of 15.8% and a lightness of 11.2%. #181b21 color hex could be obtained by blending #303642 with #000000. Closest websafe color is: #003333.

    • R 9
    • G 11
    • B 13
    RGB color chart
    • C 27
    • M 18
    • Y 0
    • K 87
    CMYK color chart

#181b21 color description : Very dark (mostly black) blue.

#181b21 Color Conversion

The hexadecimal color #181b21 has RGB values of R:24, G:27, B:33 and CMYK values of C:0.27, M:0.18, Y:0, K:0.87. Its decimal value is 1579809.

Hex triplet 181b21 #181b21
RGB Decimal 24, 27, 33 rgb(24,27,33)
RGB Percent 9.4, 10.6, 12.9 rgb(9.4%,10.6%,12.9%)
CMYK 27, 18, 0, 87
HSL 220°, 15.8, 11.2 hsl(220,15.8%,11.2%)
HSV (or HSB) 220°, 27.3, 12.9
Web Safe 003333 #003333
CIE-LAB 9.703, 0.325, -4.609
XYZ 1.043, 1.088, 1.594
xyY 0.28, 0.292, 1.088
CIE-LCH 9.703, 4.62, 274.029
CIE-LUV 9.703, -1.186, -3.3
Hunter-Lab 10.43, -0.401, -1.759
Binary 00011000, 00011011, 00100001

Color Schemes with #181b21

Complementary Color
Analogous Color
Split Complementary Color
Triadic Color
Tetradic Color
Monochromatic Color

Alternatives to #181b21

Below, you can see some colors close to #181b21. Having a set of related colors can be useful if you need an inspirational alternative to your original color choice.

Similar Colors

#181b21 Preview

Text with hexadecimal color #181b21

This text has a font color of #181b21.

<span style="color:#181b21;">Text here</span>
#181b21 background color

This paragraph has a background color of #181b21.

<p style="background-color:#181b21;">Content here</p>
#181b21 border color

This element has a border color of #181b21.

<div style="border:1px solid #181b21;">Content here</div>
CSS codes
.text {color:#181b21;}
.background {background-color:#181b21;}
.border {border:1px solid #181b21;}

Shades and Tints of #181b21

A shade is achieved by adding black to any pure hue, while a tint is created by mixing white to any pure color. In this example, #07080a is the darkest color, while #fefefe is the lightest one.

Shade Color Variation
Tint Color Variation

Tones of #181b21

A tone is produced by adding gray to any pure hue. In this case, #1c1c1d is the less saturated color, while #021437 is the most saturated one.

Tone Color Variation

Color Blindness Simulator

Below, you can see how #181b21 is perceived by people affected by a color vision deficiency. This can be useful if you need to ensure your color combinations are accessible to color-blind users.

  • #1b1b1b Achromatopsia 0.005% of the population
  • #1a1b1c Atypical Achromatopsia 0.001% of the population
  • #25262c Protanopia 1% of men
  • #27252c Deuteranopia 1% of men
  • #23272a Tritanopia 0.001% of the population
  • #202228 Protanomaly 1% of men, 0.01% of women
  • #212128 Deuteranomaly 6% of men, 0.4% of women
  • #1f2226 Tritanomaly 0.01% of the population