ColorTool
Log in
#217ECF

#217ecf ≈ Tufts Blue

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

#217ecf is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 12.94% red, 49.41% green and 81.18% blue; printed in CMYK it uses 84.06% cyan, 39.13% magenta, 0% yellow and 18.82% black. Its hue angle is 207.93°, with 72.5% saturation and 47.06% 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 4.95:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 2.55.

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 luminance0.1975

Complementary

  1. #217ecf
  2. #cf7221

Split complementary

  1. #217ecf
  2. #cf2127
  3. #cfc921

Analogous

  1. #21cfc9
  2. #217ecf
  3. #2127cf

Triadic

  1. #217ecf
  2. #cf217e
  3. #7ecf21

Tetradic

  1. #217ecf
  2. #7221cf
  3. #cf7221
  4. #7ecf21

Square

  1. #217ecf
  2. #c921cf
  3. #cf7221
  4. #27cf21

Monochromatic

  1. #0c2e4b
  2. #16568d
  3. #217ecf
  4. #58a3e4
  5. #9ac7ef

Shades

#217ecf mixed progressively with black.

  1. #217ecf
  2. #1e71ba
  3. #1a65a6
  4. #175891
  5. #144c7c
  6. #113f68
  7. #0d3253
  8. #0a263e
  9. #071929
  10. #030d15
  11. #000000

Tints

#217ecf mixed progressively with white.

  1. #217ecf
  2. #378bd4
  3. #4d98d9
  4. #64a5dd
  5. #7ab2e2
  6. #90bfe7
  7. #a6cbec
  8. #bcd8f1
  9. #d3e5f5
  10. #e9f2fa
  11. #ffffff

Tones

#217ecf mixed progressively with gray.

  1. #217ecf
  2. #2b7ec7
  3. #347ebf
  4. #3e7fb7
  5. #477faf
  6. #517fa8
  7. #5a7fa0
  8. #647f98
  9. #6d8090
  10. #778088
  11. #808080

Readable text 4.24:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.95:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #7b7b7b ≈ 0.003% of males
Achromatomaly #637ca3 ≈ 0.001% of males
Protanopia #5683d2 ≈ 1.01% of males
Deuteranopia #3a74cd ≈ 1.27% of males
Tritanopia #00919c ≈ 0.0001% of males
Protanomaly #4781d1 ≈ 1.08% of males
Deuteranomaly #3278ce ≈ 4.63% of males
Tritanomaly #008ab3 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-217ecf {
  color: #217ecf;
}
Background
.bg-217ecf {
  background-color: #217ecf;
  color: #000000;
}
Border
.border-217ecf {
  border: 2px solid #217ecf;
}
CSS variables
:root {
  --color-primary: #217ecf;
  --color-primary-rgb: 33 126 207;
  --color-primary-hsl: 208 73% 47%;
}
Gradient
.gradient-217ecf {
  background: linear-gradient(135deg, #217ecf, #2127cf);
}
Colored shadow
.shadow-217ecf {
  box-shadow: 0 8px 24px rgb(33 126 207 / 0.35);
}

#417dc1 Tufts Blue ΔE 2.55 #4682b4 Steel Blue ΔE 3.57 #0073cf True Blue ΔE 4.03 #0072bb French Blue ΔE 5.11 #318ce7 Bleu de France ΔE 5.49 #6082b6 Glaucous ΔE 7.20 #1e90ff Dodger Blue ΔE 7.66 #de8130 Inverted #7b7b7b Grayscale 

Tufts Blue
#217ecf  rgb(33, 126, 207)  hsl(208, 73%, 47%)  Tufts Blue
#cf7221  rgb(207, 114, 33)  hsl(28, 73%, 47%)  Ochre
#cf217e  rgb(207, 33, 126)  hsl(328, 73%, 47%)  Medium Violet Red
#7ecf21  rgb(126, 207, 33)  hsl(88, 73%, 47%)  Yellow Green