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#337FE7

#337fe7 ≈ Tufts Blue

  • azure
  • Lightness: medium
  • Saturation: strong
  • Cool
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#337fe7 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 90.59% blue; printed in CMYK it uses 77.92% cyan, 45.02% magenta, 0% yellow and 9.41% black. Its hue angle is 214.67°, with 78.95% saturation and 55.29% 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 5.33:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 3.8.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#3366ff
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.2165

Complementary

  1. #337fe7
  2. #e79b33

Split complementary

  1. #337fe7
  2. #e74133
  3. #d9e733

Analogous

  1. #33d9e7
  2. #337fe7
  3. #4133e7

Triadic

  1. #337fe7
  2. #e7337f
  3. #7fe733

Tetradic

  1. #337fe7
  2. #9b33e7
  3. #e79b33
  4. #7fe733

Square

  1. #337fe7
  2. #e733d9
  3. #e79b33
  4. #33e741

Monochromatic

  1. #0e3973
  2. #165ab8
  3. #337fe7
  4. #77aaef
  5. #bcd5f7

Shades

#337fe7 mixed progressively with black.

  1. #337fe7
  2. #2e72d0
  3. #2966b9
  4. #2459a2
  5. #1f4c8b
  6. #1a4074
  7. #14335c
  8. #0f2645
  9. #0a192e
  10. #050d17
  11. #000000

Tints

#337fe7 mixed progressively with white.

  1. #337fe7
  2. #478ce9
  3. #5c99ec
  4. #70a5ee
  5. #85b2f1
  6. #99bff3
  7. #adccf5
  8. #c2d9f8
  9. #d6e5fa
  10. #ebf2fd
  11. #ffffff

Tones

#337fe7 mixed progressively with gray.

  1. #337fe7
  2. #3b7fdd
  3. #427fd2
  4. #4a7fc8
  5. #527fbe
  6. #5a80b4
  7. #6180a9
  8. #69809f
  9. #718095
  10. #78808a
  11. #808080

Readable text 3.94:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 5.33:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #808080 ≈ 0.003% of males
Achromatomaly #6a80b3 ≈ 0.001% of males
Protanopia #4889eb ≈ 1.01% of males
Deuteranopia #1e79e5 ≈ 1.27% of males
Tritanopia #0098a8 ≈ 0.0001% of males
Protanomaly #4185e9 ≈ 1.08% of males
Deuteranomaly #287be6 ≈ 4.63% of males
Tritanomaly #008fc4 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-337fe7 {
  color: #337fe7;
}
Background
.bg-337fe7 {
  background-color: #337fe7;
  color: #000000;
}
Border
.border-337fe7 {
  border: 2px solid #337fe7;
}
CSS variables
:root {
  --color-primary: #337fe7;
  --color-primary-rgb: 51 127 231;
  --color-primary-hsl: 215 79% 55%;
}
Gradient
.gradient-337fe7 {
  background: linear-gradient(135deg, #337fe7, #4133e7);
}
Colored shadow
.shadow-337fe7 {
  box-shadow: 0 8px 24px rgb(51 127 231 / 0.35);
}

#417dc1 Tufts Blue ΔE 3.80 #318ce7 Bleu de France ΔE 4.89 #4682b4 Steel Blue ΔE 5.54 #0070ff Brandeis Blue ΔE 5.59 #0073cf True Blue ΔE 5.97 #6082b6 Glaucous ΔE 6.24 #1e90ff Dodger Blue ΔE 6.33 #cc8018 Inverted #808080 Grayscale 

Tufts Blue
#337fe7  rgb(51, 127, 231)  hsl(215, 79%, 55%)  Tufts Blue
#e79b33  rgb(231, 155, 51)  hsl(35, 79%, 55%)  Gamboge
#e7337f  rgb(231, 51, 127)  hsl(335, 79%, 55%)  Rose
#7fe733  rgb(127, 231, 51)  hsl(95, 79%, 55%)  Lawn Green