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#237BC9

#237bc9 ≈ Tufts Blue

  • azure
  • Lightness: medium
  • Saturation: strong
  • Cool
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#237bc9 is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 13.73% red, 48.24% green and 78.82% blue; printed in CMYK it uses 82.59% cyan, 38.81% magenta, 0% yellow and 21.18% black. Its hue angle is 208.19°, with 70.34% saturation and 46.27% 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 4.75:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 2.4.

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 luminance0.1874

Complementary

  1. #237bc9
  2. #c97123

Split complementary

  1. #237bc9
  2. #c92328
  3. #c9c423

Analogous

  1. #23c9c4
  2. #237bc9
  3. #2328c9

Triadic

  1. #237bc9
  2. #c9237b
  3. #7bc923

Tetradic

  1. #237bc9
  2. #7123c9
  3. #c97123
  4. #7bc923

Square

  1. #237bc9
  2. #c423c9
  3. #c97123
  4. #28c923

Monochromatic

  1. #0c2b47
  2. #185388
  3. #237bc9
  4. #57a0e2
  5. #98c5ed

Shades

#237bc9 mixed progressively with black.

  1. #237bc9
  2. #206fb5
  3. #1c62a1
  4. #19568d
  5. #154a79
  6. #123e65
  7. #0e3150
  8. #0b253c
  9. #071928
  10. #040c14
  11. #000000

Tints

#237bc9 mixed progressively with white.

  1. #237bc9
  2. #3988ce
  3. #4f95d4
  4. #65a3d9
  5. #7bb0df
  6. #91bde4
  7. #a7cae9
  8. #bdd7ef
  9. #d3e5f4
  10. #e9f2fa
  11. #ffffff

Tones

#237bc9 mixed progressively with gray.

  1. #237bc9
  2. #2c7cc2
  3. #367cba
  4. #3f7db3
  5. #487dac
  6. #527ea5
  7. #5b7e9d
  8. #647f96
  9. #6d7f8f
  10. #778087
  11. #808080

Readable text 4.42:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.75:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #787878 ≈ 0.003% of males
Achromatomaly #61799f ≈ 0.001% of males
Protanopia #5580cc ≈ 1.01% of males
Deuteranopia #3b71c7 ≈ 1.27% of males
Tritanopia #008e98 ≈ 0.0001% of males
Protanomaly #467ecb ≈ 1.08% of males
Deuteranomaly #3375c8 ≈ 4.63% of males
Tritanomaly #0087ae ≈ 0.0002% of males
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Text in this color

Background in this color

Border in this color

Text color
.text-237bc9 {
  color: #237bc9;
}
Background
.bg-237bc9 {
  background-color: #237bc9;
  color: #000000;
}
Border
.border-237bc9 {
  border: 2px solid #237bc9;
}
CSS variables
:root {
  --color-primary: #237bc9;
  --color-primary-rgb: 35 123 201;
  --color-primary-hsl: 208 70% 46%;
}
Gradient
.gradient-237bc9 {
  background: linear-gradient(135deg, #237bc9, #2328c9);
}
Colored shadow
.shadow-237bc9 {
  box-shadow: 0 8px 24px rgb(35 123 201 / 0.35);
}

#417dc1 Tufts Blue ΔE 2.40 #0073cf True Blue ΔE 2.97 #4682b4 Steel Blue ΔE 3.84 #0072bb French Blue ΔE 3.95 #318ce7 Bleu de France ΔE 6.70 #6082b6 Glaucous ΔE 7.30 #0070ff Brandeis Blue ΔE 7.67 #dc8436 Inverted #787878 Grayscale 

Tufts Blue
#237bc9  rgb(35, 123, 201)  hsl(208, 70%, 46%)  Tufts Blue
#c97123  rgb(201, 113, 35)  hsl(28, 70%, 46%)  Ochre
#c9237b  rgb(201, 35, 123)  hsl(328, 70%, 46%)  Medium Violet Red
#7bc923  rgb(123, 201, 35)  hsl(88, 70%, 46%)  Yellow Green