ColorTool
Log in
#337BB6

#337bb6 ≈ Tufts Blue

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

#337bb6 is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 20% red, 48.24% green and 71.37% blue; printed in CMYK it uses 71.98% cyan, 32.42% magenta, 0% yellow and 28.63% black. Its hue angle is 207.02°, with 56.22% saturation and 45.69% 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 4.65:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 2.97.

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 luminance0.1825

Complementary

  1. #337bb6
  2. #b66e33

Split complementary

  1. #337bb6
  2. #b6333a
  3. #b6b033

Analogous

  1. #33b6b0
  2. #337bb6
  3. #333ab6

Triadic

  1. #337bb6
  2. #b6337b
  3. #7bb633

Tetradic

  1. #337bb6
  2. #6e33b6
  3. #b66e33
  4. #7bb633

Square

  1. #337bb6
  2. #b033b6
  3. #b66e33
  4. #3ab633

Monochromatic

  1. #122a3f
  2. #22537a
  3. #337bb6
  4. #62a0d3
  5. #9ec4e4

Shades

#337bb6 mixed progressively with black.

  1. #337bb6
  2. #2e6fa4
  3. #296292
  4. #24567f
  5. #1f4a6d
  6. #1a3e5b
  7. #143149
  8. #0f2537
  9. #0a1924
  10. #050c12
  11. #000000

Tints

#337bb6 mixed progressively with white.

  1. #337bb6
  2. #4788bd
  3. #5c95c5
  4. #70a3cc
  5. #85b0d3
  6. #99bddb
  7. #adcae2
  8. #c2d7e9
  9. #d6e5f0
  10. #ebf2f8
  11. #ffffff

Tones

#337bb6 mixed progressively with gray.

  1. #337bb6
  2. #3b7cb1
  3. #427cab
  4. #4a7da6
  5. #527da0
  6. #5a7e9b
  7. #617e96
  8. #697f90
  9. #717f8b
  10. #788085
  11. #808080

Readable text 4.52:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.65:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #767676 ≈ 0.003% of males
Achromatomaly #627894 ≈ 0.001% of males
Protanopia #607db9 ≈ 1.01% of males
Deuteranopia #4e71b5 ≈ 1.27% of males
Tritanopia #008990 ≈ 0.0001% of males
Protanomaly #527cb8 ≈ 1.08% of males
Deuteranomaly #4575b5 ≈ 4.63% of males
Tritanomaly #0084a1 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-337bb6 {
  color: #337bb6;
}
Background
.bg-337bb6 {
  background-color: #337bb6;
  color: #000000;
}
Border
.border-337bb6 {
  border: 2px solid #337bb6;
}
CSS variables
:root {
  --color-primary: #337bb6;
  --color-primary-rgb: 51 123 182;
  --color-primary-hsl: 207 56% 46%;
}
Gradient
.gradient-337bb6 {
  background: linear-gradient(135deg, #337bb6, #333ab6);
}
Colored shadow
.shadow-337bb6 {
  box-shadow: 0 8px 24px rgb(51 123 182 / 0.35);
}

#417dc1 Tufts Blue ΔE 2.97 #4682b4 Steel Blue ΔE 3.00 #0072bb French Blue ΔE 3.66 #0073cf True Blue ΔE 3.94 #007ba7 Cerulean ΔE 6.36 #6082b6 Glaucous ΔE 7.15 #436b95 Queen Blue ΔE 7.23 #cc8449 Inverted #767676 Grayscale 

Tufts Blue
#337bb6  rgb(51, 123, 182)  hsl(207, 56%, 46%)  Tufts Blue
#b66e33  rgb(182, 110, 51)  hsl(27, 56%, 46%)  Copper
#b6337b  rgb(182, 51, 123)  hsl(327, 56%, 46%)  Medium Violet Red
#7bb633  rgb(123, 182, 51)  hsl(87, 56%, 46%)  Apple Green