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#666BDD

#666bdd ≈ Medium Slate Blue

  • blue
  • Lightness: high
  • Saturation: moderate
  • Cool
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#666bdd is a color from the blue family, with high lightness and moderate saturation. In the RGB model it is made of 40% red, 41.96% green and 86.67% blue; printed in CMYK it uses 53.85% cyan, 51.58% magenta, 0% yellow and 13.33% black. Its hue angle is 237.48°, with 63.64% saturation and 63.33% lightness in HSL. It is a cool color, often associated with trust, stability and focus. Designers typically use it for technology products, finance and banking and brand accents. Black text on this color reaches a contrast ratio of 4.71:1 (WCAG AA). The closest named color is Medium Slate Blue (#7b68ee), ΔE 4.66.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#6666cc
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1856

Complementary

  1. #666bdd
  2. #ddd866

Split complementary

  1. #666bdd
  2. #dd9c66
  3. #a6dd66

Analogous

  1. #66a6dd
  2. #666bdd
  3. #9c66dd

Triadic

  1. #666bdd
  2. #dd666b
  3. #6bdd66

Tetradic

  1. #666bdd
  2. #d866dd
  3. #ddd866
  4. #6bdd66

Square

  1. #666bdd
  2. #dd66a6
  3. #ddd866
  4. #66dd9c

Monochromatic

  1. #1f238b
  2. #2d33ca
  3. #666bdd
  4. #a5a8eb
  5. #e3e4f9

Shades

#666bdd mixed progressively with black.

  1. #666bdd
  2. #5c60c7
  3. #5256b1
  4. #474b9b
  5. #3d4085
  6. #33366f
  7. #292b58
  8. #1f2042
  9. #14152c
  10. #0a0b16
  11. #000000

Tints

#666bdd mixed progressively with white.

  1. #666bdd
  2. #757ae0
  3. #8589e4
  4. #9497e7
  5. #a3a6eb
  6. #b3b5ee
  7. #c2c4f1
  8. #d1d3f5
  9. #e0e1f8
  10. #f0f0fc
  11. #ffffff

Tones

#666bdd mixed progressively with gray.

  1. #666bdd
  2. #696dd4
  3. #6b6fca
  4. #6e71c1
  5. #7073b8
  6. #7376af
  7. #7678a5
  8. #787a9c
  9. #7b7c93
  10. #7d7e89
  11. #808080

Readable text 4.46:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.71:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #777777 ≈ 0.003% of males
Achromatomaly #7173aa ≈ 0.001% of males
Protanopia #2e7ce1 ≈ 1.01% of males
Deuteranopia #1a73db ≈ 1.27% of males
Tritanopia #2d859a ≈ 0.0001% of males
Protanomaly #4a76df ≈ 1.08% of males
Deuteranomaly #4570dc ≈ 4.63% of males
Tritanomaly #4a7bb9 ≈ 0.0002% of males
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Text in this color

Background in this color

Border in this color

Text color
.text-666bdd {
  color: #666bdd;
}
Background
.bg-666bdd {
  background-color: #666bdd;
  color: #000000;
}
Border
.border-666bdd {
  border: 2px solid #666bdd;
}
CSS variables
:root {
  --color-primary: #666bdd;
  --color-primary-rgb: 102 107 221;
  --color-primary-hsl: 237 64% 63%;
}
Gradient
.gradient-666bdd {
  background: linear-gradient(135deg, #666bdd, #9c66dd);
}
Colored shadow
.shadow-666bdd {
  box-shadow: 0 8px 24px rgb(102 107 221 / 0.35);
}

#7b68ee Medium Slate Blue ΔE 4.66 #4166f5 Ultramarine Blue ΔE 5.12 #4169e1 Royal Blue ΔE 5.35 #6a5acd Slate Blue ΔE 6.23 #6050dc Majorelle Blue ΔE 8.30 #0070ff Brandeis Blue ΔE 8.68 #9370db Medium Purple ΔE 9.00 #999422 Inverted #777777 Grayscale 

Medium Slate Blue
#666bdd  rgb(102, 107, 221)  hsl(237, 64%, 63%)  Medium Slate Blue
#ddd866  rgb(221, 216, 102)  hsl(57, 64%, 63%)  Straw
#dd666b  rgb(221, 102, 107)  hsl(357, 64%, 63%)  Indian Red
#6bdd66  rgb(107, 221, 102)  hsl(117, 64%, 63%)  Pastel Green