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#237DCF

#237dcf ≈ Tufts Blue

  • azure
  • Lightness: medium
  • Saturation: strong
  • Cool
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#237dcf is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 13.73% red, 49.02% green and 81.18% blue; printed in CMYK it uses 83.09% cyan, 39.61% magenta, 0% yellow and 18.82% black. Its hue angle is 208.6°, 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 4.91:1 (WCAG AA). The closest named color is Tufts Blue (#417dc1), ΔE 2.28.

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 luminance0.1953

Complementary

  1. #237dcf
  2. #cf7523

Split complementary

  1. #237dcf
  2. #cf2327
  3. #cfcb23

Analogous

  1. #23cfcb
  2. #237dcf
  3. #2327cf

Triadic

  1. #237dcf
  2. #cf237d
  3. #7dcf23

Tetradic

  1. #237dcf
  2. #7523cf
  3. #cf7523
  4. #7dcf23

Square

  1. #237dcf
  2. #cb23cf
  3. #cf7523
  4. #27cf23

Monochromatic

  1. #0d2e4c
  2. #18558e
  3. #237dcf
  4. #5ba2e3
  5. #9dc7ee

Shades

#237dcf mixed progressively with black.

  1. #237dcf
  2. #2071ba
  3. #1c64a6
  4. #195891
  5. #154b7c
  6. #123f68
  7. #0e3253
  8. #0b263e
  9. #071929
  10. #040d15
  11. #000000

Tints

#237dcf mixed progressively with white.

  1. #237dcf
  2. #398ad4
  3. #4f97d9
  4. #65a4dd
  5. #7bb1e2
  6. #91bee7
  7. #a7cbec
  8. #bdd8f1
  9. #d3e5f5
  10. #e9f2fa
  11. #ffffff

Tones

#237dcf mixed progressively with gray.

  1. #237dcf
  2. #2c7dc7
  3. #367ebf
  4. #3f7eb7
  5. #487eaf
  6. #527fa8
  7. #5b7fa0
  8. #647f98
  9. #6d7f90
  10. #778088
  11. #808080

Readable text 4.28:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.91:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #7a7a7a ≈ 0.003% of males
Achromatomaly #637ba3 ≈ 0.001% of males
Protanopia #5582d2 ≈ 1.01% of males
Deuteranopia #3973cd ≈ 1.27% of males
Tritanopia #00919c ≈ 0.0001% of males
Protanomaly #4680d1 ≈ 1.08% of males
Deuteranomaly #3177ce ≈ 4.63% of males
Tritanomaly #0089b3 ≈ 0.0002% of males
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Text in this color

Background in this color

Border in this color

Text color
.text-237dcf {
  color: #237dcf;
}
Background
.bg-237dcf {
  background-color: #237dcf;
  color: #000000;
}
Border
.border-237dcf {
  border: 2px solid #237dcf;
}
CSS variables
:root {
  --color-primary: #237dcf;
  --color-primary-rgb: 35 125 207;
  --color-primary-hsl: 209 71% 47%;
}
Gradient
.gradient-237dcf {
  background: linear-gradient(135deg, #237dcf, #2327cf);
}
Colored shadow
.shadow-237dcf {
  box-shadow: 0 8px 24px rgb(35 125 207 / 0.35);
}

#417dc1 Tufts Blue ΔE 2.28 #0073cf True Blue ΔE 3.64 #4682b4 Steel Blue ΔE 3.71 #0072bb French Blue ΔE 4.92 #318ce7 Bleu de France ΔE 5.75 #6082b6 Glaucous ΔE 7.06 #0070ff Brandeis Blue ΔE 7.55 #dc8230 Inverted #7a7a7a Grayscale 

Tufts Blue
#237dcf  rgb(35, 125, 207)  hsl(209, 71%, 47%)  Tufts Blue
#cf7523  rgb(207, 117, 35)  hsl(29, 71%, 47%)  Ochre
#cf237d  rgb(207, 35, 125)  hsl(329, 71%, 47%)  Telemagenta
#7dcf23  rgb(125, 207, 35)  hsl(89, 71%, 47%)  Yellow Green