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#337FE4

#337fe4 ≈ Tufts Blue

  • azure
  • Lightness: medium
  • Saturation: strong
  • Cool
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#337fe4 is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 20% red, 49.8% green and 89.41% blue; printed in CMYK it uses 77.63% cyan, 44.3% magenta, 0% yellow and 10.59% black. Its hue angle is 214.24°, with 76.62% saturation and 54.71% 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 5.3:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 3.48.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#3366cc
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.2148

Complementary

  1. #337fe4
  2. #e49833

Split complementary

  1. #337fe4
  2. #e44033
  3. #d7e433

Analogous

  1. #33d7e4
  2. #337fe4
  3. #4033e4

Triadic

  1. #337fe4
  2. #e4337f
  3. #7fe433

Tetradic

  1. #337fe4
  2. #9833e4
  3. #e49833
  4. #7fe433

Square

  1. #337fe4
  2. #e433d7
  3. #e49833
  4. #33e440

Monochromatic

  1. #0f386f
  2. #185ab3
  3. #337fe4
  4. #77a9ed
  5. #bad4f6

Shades

#337fe4 mixed progressively with black.

  1. #337fe4
  2. #2e72cd
  3. #2966b6
  4. #2459a0
  5. #1f4c89
  6. #1a4072
  7. #14335b
  8. #0f2644
  9. #0a192e
  10. #050d17
  11. #000000

Tints

#337fe4 mixed progressively with white.

  1. #337fe4
  2. #478ce7
  3. #5c99e9
  4. #70a5ec
  5. #85b2ef
  6. #99bff2
  7. #adccf4
  8. #c2d9f7
  9. #d6e5fa
  10. #ebf2fc
  11. #ffffff

Tones

#337fe4 mixed progressively with gray.

  1. #337fe4
  2. #3b7fda
  3. #427fd0
  4. #4a7fc6
  5. #527fbc
  6. #5a80b2
  7. #6180a8
  8. #69809e
  9. #718094
  10. #78808a
  11. #808080

Readable text 3.96:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 5.3:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #808080 ≈ 0.003% of males
Achromatomaly #697fb1 ≈ 0.001% of males
Protanopia #4b88e8 ≈ 1.01% of males
Deuteranopia #2478e2 ≈ 1.27% of males
Tritanopia #0097a6 ≈ 0.0001% of males
Protanomaly #4285e6 ≈ 1.08% of males
Deuteranomaly #2b7be3 ≈ 4.63% of males
Tritanomaly #008ec2 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-337fe4 {
  color: #337fe4;
}
Background
.bg-337fe4 {
  background-color: #337fe4;
  color: #000000;
}
Border
.border-337fe4 {
  border: 2px solid #337fe4;
}
CSS variables
:root {
  --color-primary: #337fe4;
  --color-primary-rgb: 51 127 228;
  --color-primary-hsl: 214 77% 55%;
}
Gradient
.gradient-337fe4 {
  background: linear-gradient(135deg, #337fe4, #4033e4);
}
Colored shadow
.shadow-337fe4 {
  box-shadow: 0 8px 24px rgb(51 127 228 / 0.35);
}

#417dc1 Tufts Blue ΔE 3.48 #318ce7 Bleu de France ΔE 4.81 #4682b4 Steel Blue ΔE 5.28 #0073cf True Blue ΔE 5.71 #0070ff Brandeis Blue ΔE 5.76 #6082b6 Glaucous ΔE 6.15 #1e90ff Dodger Blue ΔE 6.37 #cc801b Inverted #808080 Grayscale 

Tufts Blue
#337fe4  rgb(51, 127, 228)  hsl(214, 77%, 55%)  Tufts Blue
#e49833  rgb(228, 152, 51)  hsl(34, 77%, 55%)  Carrot Orange
#e4337f  rgb(228, 51, 127)  hsl(334, 77%, 55%)  Rose
#7fe433  rgb(127, 228, 51)  hsl(94, 77%, 55%)  Lawn Green