ColorTool
Log in
#337ABA

#337aba ≈ Tufts Blue

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

#337aba is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 20% red, 47.84% green and 72.94% blue; printed in CMYK it uses 72.58% cyan, 34.41% magenta, 0% yellow and 27.06% black. Its hue angle is 208.44°, with 56.96% saturation and 46.47% 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 4.63:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 2.39.

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 luminance0.1817

Complementary

  1. #337aba
  2. #ba7333

Split complementary

  1. #337aba
  2. #ba3337
  3. #bab633

Analogous

  1. #33bab6
  2. #337aba
  3. #3337ba

Triadic

  1. #337aba
  2. #ba337a
  3. #7aba33

Tetradic

  1. #337aba
  2. #7333ba
  3. #ba7333
  4. #7aba33

Square

  1. #337aba
  2. #b633ba
  3. #ba7333
  4. #37ba33

Monochromatic

  1. #122b42
  2. #23537e
  3. #337aba
  4. #65a0d5
  5. #a1c5e5

Shades

#337aba mixed progressively with black.

  1. #337aba
  2. #2e6ea7
  3. #296295
  4. #245582
  5. #1f4970
  6. #1a3d5d
  7. #14314a
  8. #0f2538
  9. #0a1825
  10. #050c13
  11. #000000

Tints

#337aba mixed progressively with white.

  1. #337aba
  2. #4787c1
  3. #5c95c8
  4. #70a2cf
  5. #85afd6
  6. #99bddd
  7. #adcae3
  8. #c2d7ea
  9. #d6e4f1
  10. #ebf2f8
  11. #ffffff

Tones

#337aba mixed progressively with gray.

  1. #337aba
  2. #3b7bb4
  3. #427bae
  4. #4a7ca9
  5. #527ca3
  6. #5a7d9d
  7. #617e97
  8. #697e91
  9. #717f8c
  10. #787f86
  11. #808080

Readable text 4.53:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.63:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #767676 ≈ 0.003% of males
Achromatomaly #627896 ≈ 0.001% of males
Protanopia #5d7dbd ≈ 1.01% of males
Deuteranopia #4a70b9 ≈ 1.27% of males
Tritanopia #008991 ≈ 0.0001% of males
Protanomaly #4f7cbc ≈ 1.08% of males
Deuteranomaly #4274b9 ≈ 4.63% of males
Tritanomaly #0083a3 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-337aba {
  color: #337aba;
}
Background
.bg-337aba {
  background-color: #337aba;
  color: #000000;
}
Border
.border-337aba {
  border: 2px solid #337aba;
}
CSS variables
:root {
  --color-primary: #337aba;
  --color-primary-rgb: 51 122 186;
  --color-primary-hsl: 208 57% 46%;
}
Gradient
.gradient-337aba {
  background: linear-gradient(135deg, #337aba, #3337ba);
}
Colored shadow
.shadow-337aba {
  box-shadow: 0 8px 24px rgb(51 122 186 / 0.35);
}

#417dc1 Tufts Blue ΔE 2.39 #0073cf True Blue ΔE 3.20 #4682b4 Steel Blue ΔE 3.39 #0072bb French Blue ΔE 3.45 #6082b6 Glaucous ΔE 6.87 #436b95 Queen Blue ΔE 7.07 #007ba7 Cerulean ΔE 7.32 #cc8545 Inverted #767676 Grayscale 

Tufts Blue
#337aba  rgb(51, 122, 186)  hsl(208, 57%, 46%)  Tufts Blue
#ba7333  rgb(186, 115, 51)  hsl(28, 57%, 46%)  Copper
#ba337a  rgb(186, 51, 122)  hsl(328, 57%, 46%)  Medium Violet Red
#7aba33  rgb(122, 186, 51)  hsl(88, 57%, 46%)  Kelly Green