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#237FD4

#237fd4 ≈ Tufts Blue

  • azure
  • Lightness: medium
  • Saturation: strong
  • Cool
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#237fd4 is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 13.73% red, 49.8% green and 83.14% blue; printed in CMYK it uses 83.49% cyan, 40.09% magenta, 0% yellow and 16.86% black. Its hue angle is 208.81°, with 71.66% saturation and 48.43% 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 5.06:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 2.56.

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 luminance0.2029

Complementary

  1. #237fd4
  2. #d47823

Split complementary

  1. #237fd4
  2. #d42327
  3. #d4d023

Analogous

  1. #23d4d0
  2. #237fd4
  3. #2327d4

Triadic

  1. #237fd4
  2. #d4237f
  3. #7fd423

Tetradic

  1. #237fd4
  2. #7823d4
  3. #d47823
  4. #7fd423

Square

  1. #237fd4
  2. #d023d4
  3. #d47823
  4. #27d423

Monochromatic

  1. #0d3051
  2. #185892
  3. #237fd4
  4. #5fa4e5
  5. #a1caef

Shades

#237fd4 mixed progressively with black.

  1. #237fd4
  2. #2072bf
  3. #1c66aa
  4. #195994
  5. #154c7f
  6. #12406a
  7. #0e3355
  8. #0b2640
  9. #07192a
  10. #040d15
  11. #000000

Tints

#237fd4 mixed progressively with white.

  1. #237fd4
  2. #398cd8
  3. #4f99dd
  4. #65a5e1
  5. #7bb2e5
  6. #91bfea
  7. #a7ccee
  8. #bdd9f2
  9. #d3e5f6
  10. #e9f2fb
  11. #ffffff

Tones

#237fd4 mixed progressively with gray.

  1. #237fd4
  2. #2c7fcc
  3. #367fc3
  4. #3f7fbb
  5. #487fb2
  6. #5280aa
  7. #5b80a2
  8. #648099
  9. #6d8091
  10. #778088
  11. #808080

Readable text 4.15:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 5.06:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #7c7c7c ≈ 0.003% of males
Achromatomaly #647da7 ≈ 0.001% of males
Protanopia #5585d7 ≈ 1.01% of males
Deuteranopia #3775d2 ≈ 1.27% of males
Tritanopia #00939f ≈ 0.0001% of males
Protanomaly #4683d6 ≈ 1.08% of males
Deuteranomaly #3079d3 ≈ 4.63% of males
Tritanomaly #008cb7 ≈ 0.0002% of males
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Text in this color

Background in this color

Border in this color

Text color
.text-237fd4 {
  color: #237fd4;
}
Background
.bg-237fd4 {
  background-color: #237fd4;
  color: #000000;
}
Border
.border-237fd4 {
  border: 2px solid #237fd4;
}
CSS variables
:root {
  --color-primary: #237fd4;
  --color-primary-rgb: 35 127 212;
  --color-primary-hsl: 209 72% 48%;
}
Gradient
.gradient-237fd4 {
  background: linear-gradient(135deg, #237fd4, #2327d4);
}
Colored shadow
.shadow-237fd4 {
  box-shadow: 0 8px 24px rgb(35 127 212 / 0.35);
}

#417dc1 Tufts Blue ΔE 2.56 #4682b4 Steel Blue ΔE 3.75 #0073cf True Blue ΔE 4.41 #318ce7 Bleu de France ΔE 4.88 #0072bb French Blue ΔE 5.80 #6082b6 Glaucous ΔE 6.98 #1e90ff Dodger Blue ΔE 7.01 #dc802b Inverted #7c7c7c Grayscale 

Tufts Blue
#237fd4  rgb(35, 127, 212)  hsl(209, 72%, 48%)  Tufts Blue
#d47823  rgb(212, 120, 35)  hsl(29, 72%, 48%)  Ochre
#d4237f  rgb(212, 35, 127)  hsl(329, 72%, 48%)  Telemagenta
#7fd423  rgb(127, 212, 35)  hsl(89, 72%, 48%)  Yellow Green