ColorTool
Log in
#183FCF

#183fcf ≈ Persian Blue

  • blue
  • Lightness: medium
  • Saturation: strong
  • Cool
Check contrast Explore in graph Random color

#183fcf is a color from the blue family, with medium lightness and strong saturation. In the RGB model it is made of 9.41% red, 24.71% green and 81.18% blue; printed in CMYK it uses 88.41% cyan, 69.57% magenta, 0% yellow and 18.82% black. Its hue angle is 227.21°, with 79.22% saturation and 45.29% lightness in HSL. It is a cool color, often associated with trust, stability and focus. Designers typically use it for technology products, finance and banking and brand accents. White text on this color reaches a contrast ratio of 7.92:1 (WCAG AAA). The closest named color is Persian Blue (#1c39bb), ΔE 3.03.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#0033cc
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.0825

Complementary

  1. #183fcf
  2. #cfa818

Split complementary

  1. #183fcf
  2. #cf4c18
  3. #9acf18

Analogous

  1. #189acf
  2. #183fcf
  3. #4c18cf

Triadic

  1. #183fcf
  2. #cf183f
  3. #3fcf18

Tetradic

  1. #183fcf
  2. #a818cf
  3. #cfa818
  4. #3fcf18

Square

  1. #183fcf
  2. #cf189a
  3. #cfa818
  4. #18cf4c

Monochromatic

  1. #081546
  2. #102a8a
  3. #183fcf
  4. #4a6cea
  5. #8ea3f2

Shades

#183fcf mixed progressively with black.

  1. #183fcf
  2. #1639ba
  3. #1332a6
  4. #112c91
  5. #0e267c
  6. #0c2068
  7. #0a1953
  8. #07133e
  9. #050d29
  10. #020615
  11. #000000

Tints

#183fcf mixed progressively with white.

  1. #183fcf
  2. #2f52d4
  3. #4665d9
  4. #5d79dd
  5. #748ce2
  6. #8c9fe7
  7. #a3b2ec
  8. #bac5f1
  9. #d1d9f5
  10. #e8ecfa
  11. #ffffff

Tones

#183fcf mixed progressively with gray.

  1. #183fcf
  2. #2246c7
  3. #2d4cbf
  4. #3753b7
  5. #4259af
  6. #4c60a8
  7. #5666a0
  8. #616d98
  9. #6b7390
  10. #767a88
  11. #808080

Readable text 7.92:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓
Readable text 2.65:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕

Achromatopsia #515151 ≈ 0.003% of males
Achromatomaly #414a95 ≈ 0.001% of males
Protanopia #005ad3 ≈ 1.01% of males
Deuteranopia #0048cc ≈ 1.27% of males
Tritanopia #006882 ≈ 0.0001% of males
Protanomaly #0050d2 ≈ 1.08% of males
Deuteranomaly #0045cd ≈ 4.63% of males
Tritanomaly #005aa7 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-183fcf {
  color: #183fcf;
}
Background
.bg-183fcf {
  background-color: #183fcf;
  color: #ffffff;
}
Border
.border-183fcf {
  border: 2px solid #183fcf;
}
CSS variables
:root {
  --color-primary: #183fcf;
  --color-primary-rgb: 24 63 207;
  --color-primary-hsl: 227 79% 45%;
}
Gradient
.gradient-183fcf {
  background: linear-gradient(135deg, #183fcf, #4c18cf);
}
Colored shadow
.shadow-183fcf {
  box-shadow: 0 8px 24px rgb(24 63 207 / 0.35);
}

#1c39bb Persian Blue ΔE 3.03 #4f42b5 Ocean Blue ΔE 5.76 #1034a6 Egyptian Blue ΔE 6.21 #0047ab Cobalt Blue ΔE 6.58 #5a4fcf Iris ΔE 7.32 #0f52ba Sapphire ΔE 7.41 #003399 Smalt ΔE 8.10 #e7c030 Inverted #515151 Grayscale 

Persian Blue
#183fcf  rgb(24, 63, 207)  hsl(227, 79%, 45%)  Persian Blue
#cfa818  rgb(207, 168, 24)  hsl(47, 79%, 45%)  Metallic Gold
#cf183f  rgb(207, 24, 63)  hsl(347, 79%, 45%)  Cardinal
#3fcf18  rgb(63, 207, 24)  hsl(107, 79%, 45%)  Lime Green