ColorTool
Log in
#287CBB

#287cbb ≈ Steel Blue

  • azure
  • Lightness: medium
  • Saturation: strong
  • Cool
Check contrast Explore in graph Random color

#287cbb is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 15.69% red, 48.63% green and 73.33% blue; printed in CMYK it uses 78.61% cyan, 33.69% magenta, 0% yellow and 26.67% black. Its hue angle is 205.71°, with 64.76% saturation and 44.51% 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 4.69:1 (WCAG AA). The closest named color is Steel Blue (#4682b4), ΔE 3.2.

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 luminance0.1845

Complementary

  1. #287cbb
  2. #bb6728

Split complementary

  1. #287cbb
  2. #bb2833
  3. #bbb028

Analogous

  1. #28bbb0
  2. #287cbb
  3. #2833bb

Triadic

  1. #287cbb
  2. #bb287c
  3. #7cbb28

Tetradic

  1. #287cbb
  2. #6728bb
  3. #bb6728
  4. #7cbb28

Square

  1. #287cbb
  2. #b028bb
  3. #bb6728
  4. #33bb28

Monochromatic

  1. #0d283d
  2. #1b527c
  3. #287cbb
  4. #55a1db
  5. #94c4e8

Shades

#287cbb mixed progressively with black.

  1. #287cbb
  2. #2470a8
  3. #206396
  4. #1c5783
  5. #184a70
  6. #143e5e
  7. #10324b
  8. #0c2538
  9. #081925
  10. #040c13
  11. #000000

Tints

#287cbb mixed progressively with white.

  1. #287cbb
  2. #3e89c2
  3. #5396c9
  4. #69a3cf
  5. #7eb0d6
  6. #94bedd
  7. #a9cbe4
  8. #bfd8eb
  9. #d4e5f1
  10. #eaf2f8
  11. #ffffff

Tones

#287cbb mixed progressively with gray.

  1. #287cbb
  2. #317cb5
  3. #3a7daf
  4. #427da9
  5. #4b7ea3
  6. #547e9e
  7. #5d7e98
  8. #667f92
  9. #6e7f8c
  10. #778086
  11. #808080

Readable text 4.48:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.69:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #777777 ≈ 0.003% of males
Achromatomaly #617997 ≈ 0.001% of males
Protanopia #5f7ebe ≈ 1.01% of males
Deuteranopia #4a71ba ≈ 1.27% of males
Tritanopia #008b93 ≈ 0.0001% of males
Protanomaly #4e7dbd ≈ 1.08% of males
Deuteranomaly #3f76ba ≈ 4.63% of males
Tritanomaly #0085a4 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-287cbb {
  color: #287cbb;
}
Background
.bg-287cbb {
  background-color: #287cbb;
  color: #000000;
}
Border
.border-287cbb {
  border: 2px solid #287cbb;
}
CSS variables
:root {
  --color-primary: #287cbb;
  --color-primary-rgb: 40 124 187;
  --color-primary-hsl: 206 65% 45%;
}
Gradient
.gradient-287cbb {
  background: linear-gradient(135deg, #287cbb, #2833bb);
}
Colored shadow
.shadow-287cbb {
  box-shadow: 0 8px 24px rgb(40 124 187 / 0.35);
}

#4682b4 Steel Blue ΔE 3.20 #417dc1 Tufts Blue ΔE 3.50 #0072bb French Blue ΔE 3.80 #0073cf True Blue ΔE 4.26 #007ba7 Cerulean ΔE 6.22 #318ce7 Bleu de France ΔE 7.45 #6082b6 Glaucous ΔE 7.82 #d78344 Inverted #777777 Grayscale 

Steel Blue
#287cbb  rgb(40, 124, 187)  hsl(206, 65%, 45%)  Steel Blue
#bb6728  rgb(187, 103, 40)  hsl(26, 65%, 45%)  Copper
#bb287c  rgb(187, 40, 124)  hsl(326, 65%, 45%)  Medium Violet Red
#7cbb28  rgb(124, 187, 40)  hsl(86, 65%, 45%)  Apple Green