ColorTool
Log in
#337FA5

#337fa5 ≈ Cerulean

  • azure
  • Lightness: medium
  • Saturation: moderate
  • Cool
Check contrast Explore in graph Random color

#337fa5 is a color from the azure family, with medium lightness and moderate saturation. In the RGB model it is made of 20% red, 49.8% green and 64.71% blue; printed in CMYK it uses 69.09% cyan, 23.03% magenta, 0% yellow and 35.29% black. Its hue angle is 200°, with 52.78% saturation and 42.35% lightness in HSL. It is a cool color, often associated with openness, freedom and calm. Designers typically use it for technology products, finance and banking and brand accents. Black text on this color reaches a contrast ratio of 4.72:1 (WCAG AA). The closest named color is Cerulean (#007ba7), ΔE 2.75.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#336699
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.186

Complementary

  1. #337fa5
  2. #a55933

Split complementary

  1. #337fa5
  2. #a53346
  3. #a59233

Analogous

  1. #33a592
  2. #337fa5
  3. #3346a5

Triadic

  1. #337fa5
  2. #a5337f
  3. #7fa533

Tetradic

  1. #337fa5
  2. #5933a5
  3. #a55933
  4. #7fa533

Square

  1. #337fa5
  2. #9233a5
  3. #a55933
  4. #46a533

Monochromatic

  1. #0f2530
  2. #21526b
  3. #337fa5
  4. #59a5cc
  5. #93c5de

Shades

#337fa5 mixed progressively with black.

  1. #337fa5
  2. #2e7295
  3. #296684
  4. #245974
  5. #1f4c63
  6. #1a4053
  7. #143342
  8. #0f2632
  9. #0a1921
  10. #050d11
  11. #000000

Tints

#337fa5 mixed progressively with white.

  1. #337fa5
  2. #478cae
  3. #5c99b7
  4. #70a5c0
  5. #85b2c9
  6. #99bfd2
  7. #adccdb
  8. #c2d9e4
  9. #d6e5ed
  10. #ebf2f6
  11. #ffffff

Tones

#337fa5 mixed progressively with gray.

  1. #337fa5
  2. #3b7fa1
  3. #427f9e
  4. #4a7f9a
  5. #527f96
  6. #5a8093
  7. #61808f
  8. #69808b
  9. #718087
  10. #788084
  11. #808080

Readable text 4.45:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.72:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #777777 ≈ 0.003% of males
Achromatomaly #637b8c ≈ 0.001% of males
Protanopia #6c7ea7 ≈ 1.01% of males
Deuteranopia #5d72a4 ≈ 1.27% of males
Tritanopia #00898c ≈ 0.0001% of males
Protanomaly #5b7ea6 ≈ 1.08% of males
Deuteranomaly #4f78a5 ≈ 4.63% of males
Tritanomaly #008597 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-337fa5 {
  color: #337fa5;
}
Background
.bg-337fa5 {
  background-color: #337fa5;
  color: #000000;
}
Border
.border-337fa5 {
  border: 2px solid #337fa5;
}
CSS variables
:root {
  --color-primary: #337fa5;
  --color-primary-rgb: 51 127 165;
  --color-primary-hsl: 200 53% 42%;
}
Gradient
.gradient-337fa5 {
  background: linear-gradient(135deg, #337fa5, #3346a5);
}
Colored shadow
.shadow-337fa5 {
  box-shadow: 0 8px 24px rgb(51 127 165 / 0.35);
}

#007ba7 Cerulean ΔE 2.75 #4682b4 Steel Blue ΔE 5.22 #5d8aa8 Air Force Blue ΔE 6.32 #367588 Teal Blue ΔE 7.47 #417dc1 Tufts Blue ΔE 7.83 #0072bb French Blue ΔE 7.96 #006994 Sea Blue ΔE 8.45 #cc805a Inverted #777777 Grayscale 

Cerulean
#337fa5  rgb(51, 127, 165)  hsl(200, 53%, 42%)  Cerulean
#a55933  rgb(165, 89, 51)  hsl(20, 53%, 42%)  Sienna
#a5337f  rgb(165, 51, 127)  hsl(320, 53%, 42%)  Deep Plum
#7fa533  rgb(127, 165, 51)  hsl(80, 53%, 42%)  Apple Green