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#637E8F

#637e8f ≈ Slate Gray

  • azure
  • Lightness: medium
  • Saturation: muted
  • Cool
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#637e8f is a color from the azure family, with medium lightness and muted saturation. In the RGB model it is made of 38.82% red, 49.41% green and 56.08% blue; printed in CMYK it uses 30.77% cyan, 11.89% magenta, 0% yellow and 43.92% black. Its hue angle is 203.18°, with 18.18% 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 Slate Gray (#708090), ΔE 3.97.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#666699
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1956

Complementary

  1. #637e8f
  2. #8f7463

Split complementary

  1. #637e8f
  2. #8f6368
  3. #8f8a63

Analogous

  1. #638f8a
  2. #637e8f
  3. #63688f

Triadic

  1. #637e8f
  2. #8f637e
  3. #7e8f63

Tetradic

  1. #637e8f
  2. #74638f
  3. #8f7463
  4. #7e8f63

Square

  1. #637e8f
  2. #8a638f
  3. #8f7463
  4. #688f63

Monochromatic

  1. #242e35
  2. #445662
  3. #637e8f
  4. #8ea3b1
  5. #bbc8d0

Shades

#637e8f mixed progressively with black.

  1. #637e8f
  2. #597181
  3. #4f6572
  4. #455864
  5. #3b4c56
  6. #323f48
  7. #283239
  8. #1e262b
  9. #14191d
  10. #0a0d0e
  11. #000000

Tints

#637e8f mixed progressively with white.

  1. #637e8f
  2. #738b9a
  3. #8298a5
  4. #92a5b1
  5. #a1b2bc
  6. #b1bfc7
  7. #c1cbd2
  8. #d0d8dd
  9. #e0e5e9
  10. #eff2f4
  11. #ffffff

Tones

#637e8f mixed progressively with gray.

  1. #637e8f
  2. #667e8e
  3. #697e8c
  4. #6c7f8b
  5. #6f7f89
  6. #727f88
  7. #747f86
  8. #777f85
  9. #7a8083
  10. #7d8082
  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 #727c83 ≈ 0.001% of males
Protanopia #767d90 ≈ 1.01% of males
Deuteranopia #70788f ≈ 1.27% of males
Tritanopia #558283 ≈ 0.0001% of males
Protanomaly #6f7d90 ≈ 1.08% of males
Deuteranomaly #6b7b8f ≈ 4.63% of males
Tritanomaly #5b8188 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-637e8f {
  color: #637e8f;
}
Background
.bg-637e8f {
  background-color: #637e8f;
  color: #000000;
}
Border
.border-637e8f {
  border: 2px solid #637e8f;
}
CSS variables
:root {
  --color-primary: #637e8f;
  --color-primary-rgb: 99 126 143;
  --color-primary-hsl: 203 18% 47%;
}
Gradient
.gradient-637e8f {
  background: linear-gradient(135deg, #637e8f, #63688f);
}
Colored shadow
.shadow-637e8f {
  box-shadow: 0 8px 24px rgb(99 126 143 / 0.35);
}

#708090 Slate Gray ΔE 3.97 #708090 Slate Grey ΔE 3.97 #778899 Light Slate Gray ΔE 5.65 #778899 Light Slate Grey ΔE 5.65 #5d8aa8 Air Force Blue ΔE 6.14 #367588 Teal Blue ΔE 8.98 #4682b4 Steel Blue ΔE 9.19 #9c8170 Inverted #7a7a7a Grayscale 

Slate Gray
#637e8f  rgb(99, 126, 143)  hsl(203, 18%, 47%)  Slate Gray
#8f7463  rgb(143, 116, 99)  hsl(23, 18%, 47%)  Beaver
#8f637e  rgb(143, 99, 126)  hsl(323, 18%, 47%)  Mauve Taupe
#7e8f63  rgb(126, 143, 99)  hsl(83, 18%, 47%)  Moss Green