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#237ECF

#237ecf ≈ Tufts Blue

  • azure
  • Lightness: medium
  • Saturation: strong
  • Cool
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#237ecf is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 13.73% red, 49.41% green and 81.18% blue; printed in CMYK it uses 83.09% cyan, 39.13% magenta, 0% yellow and 18.82% black. Its hue angle is 208.26°, with 71.07% saturation and 47.45% 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 4.96:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 2.44.

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 luminance0.1978

Complementary

  1. #237ecf
  2. #cf7423

Split complementary

  1. #237ecf
  2. #cf2328
  3. #cfca23

Analogous

  1. #23cfca
  2. #237ecf
  3. #2328cf

Triadic

  1. #237ecf
  2. #cf237e
  3. #7ecf23

Tetradic

  1. #237ecf
  2. #7423cf
  3. #cf7423
  4. #7ecf23

Square

  1. #237ecf
  2. #ca23cf
  3. #cf7423
  4. #28cf23

Monochromatic

  1. #0d2e4c
  2. #18568e
  3. #237ecf
  4. #5ba3e3
  5. #9dc8ee

Shades

#237ecf mixed progressively with black.

  1. #237ecf
  2. #2071ba
  3. #1c65a6
  4. #195891
  5. #154c7c
  6. #123f68
  7. #0e3253
  8. #0b263e
  9. #071929
  10. #040d15
  11. #000000

Tints

#237ecf mixed progressively with white.

  1. #237ecf
  2. #398bd4
  3. #4f98d9
  4. #65a5dd
  5. #7bb2e2
  6. #91bfe7
  7. #a7cbec
  8. #bdd8f1
  9. #d3e5f5
  10. #e9f2fa
  11. #ffffff

Tones

#237ecf mixed progressively with gray.

  1. #237ecf
  2. #2c7ec7
  3. #367ebf
  4. #3f7fb7
  5. #487faf
  6. #527fa8
  7. #5b7fa0
  8. #647f98
  9. #6d8090
  10. #778088
  11. #808080

Readable text 4.24:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.96:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #7b7b7b ≈ 0.003% of males
Achromatomaly #637ca3 ≈ 0.001% of males
Protanopia #5783d2 ≈ 1.01% of males
Deuteranopia #3b74cd ≈ 1.27% of males
Tritanopia #00919c ≈ 0.0001% of males
Protanomaly #4781d1 ≈ 1.08% of males
Deuteranomaly #3378ce ≈ 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-237ecf {
  color: #237ecf;
}
Background
.bg-237ecf {
  background-color: #237ecf;
  color: #000000;
}
Border
.border-237ecf {
  border: 2px solid #237ecf;
}
CSS variables
:root {
  --color-primary: #237ecf;
  --color-primary-rgb: 35 126 207;
  --color-primary-hsl: 208 71% 47%;
}
Gradient
.gradient-237ecf {
  background: linear-gradient(135deg, #237ecf, #2328cf);
}
Colored shadow
.shadow-237ecf {
  box-shadow: 0 8px 24px rgb(35 126 207 / 0.35);
}

#417dc1 Tufts Blue ΔE 2.44 #4682b4 Steel Blue ΔE 3.56 #0073cf True Blue ΔE 4.02 #0072bb French Blue ΔE 5.16 #318ce7 Bleu de France ΔE 5.45 #6082b6 Glaucous ΔE 7.09 #1e90ff Dodger Blue ΔE 7.63 #dc8130 Inverted #7b7b7b Grayscale 

Tufts Blue
#237ecf  rgb(35, 126, 207)  hsl(208, 71%, 47%)  Tufts Blue
#cf7423  rgb(207, 116, 35)  hsl(28, 71%, 47%)  Ochre
#cf237e  rgb(207, 35, 126)  hsl(328, 71%, 47%)  Telemagenta
#7ecf23  rgb(126, 207, 35)  hsl(88, 71%, 47%)  Yellow Green