ColorTool
Log in
#337AAA

#337aaa ≈ Steel Blue

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

#337aaa is a color from the azure family, with medium lightness and moderate saturation. In the RGB model it is made of 20% red, 47.84% green and 66.67% blue; printed in CMYK it uses 70% cyan, 28.24% magenta, 0% yellow and 33.33% black. Its hue angle is 204.2°, with 53.85% saturation and 43.33% 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. White text on this color reaches a contrast ratio of 4.66:1 (WCAG AA). The closest named color is Steel Blue (#4682b4), ΔE 3.85.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#336699
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1753

Complementary

  1. #337aaa
  2. #aa6333

Split complementary

  1. #337aaa
  2. #aa333e
  3. #aa9e33

Analogous

  1. #33aa9e
  2. #337aaa
  3. #333eaa

Triadic

  1. #337aaa
  2. #aa337a
  3. #7aaa33

Tetradic

  1. #337aaa
  2. #6333aa
  3. #aa6333
  4. #7aaa33

Square

  1. #337aaa
  2. #9e33aa
  3. #aa6333
  4. #3eaa33

Monochromatic

  1. #102634
  2. #21506f
  3. #337aaa
  4. #5ca0ce
  5. #96c2e0

Shades

#337aaa mixed progressively with black.

  1. #337aaa
  2. #2e6e99
  3. #296288
  4. #245577
  5. #1f4966
  6. #1a3d55
  7. #143144
  8. #0f2533
  9. #0a1822
  10. #050c11
  11. #000000

Tints

#337aaa mixed progressively with white.

  1. #337aaa
  2. #4787b3
  3. #5c95bb
  4. #70a2c4
  5. #85afcc
  6. #99bdd5
  7. #adcadd
  8. #c2d7e6
  9. #d6e4ee
  10. #ebf2f7
  11. #ffffff

Tones

#337aaa mixed progressively with gray.

  1. #337aaa
  2. #3b7ba6
  3. #427ba2
  4. #4a7c9d
  5. #527c99
  6. #5a7d95
  7. #617e91
  8. #697e8d
  9. #717f88
  10. #787f84
  11. #808080

Readable text 4.66:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.51:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #747474 ≈ 0.003% of males
Achromatomaly #61778d ≈ 0.001% of males
Protanopia #647bac ≈ 1.01% of males
Deuteranopia #546fa9 ≈ 1.27% of males
Tritanopia #00868b ≈ 0.0001% of males
Protanomaly #557aab ≈ 1.08% of males
Deuteranomaly #4974a9 ≈ 4.63% of males
Tritanomaly #008198 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-337aaa {
  color: #337aaa;
}
Background
.bg-337aaa {
  background-color: #337aaa;
  color: #ffffff;
}
Border
.border-337aaa {
  border: 2px solid #337aaa;
}
CSS variables
:root {
  --color-primary: #337aaa;
  --color-primary-rgb: 51 122 170;
  --color-primary-hsl: 204 54% 43%;
}
Gradient
.gradient-337aaa {
  background: linear-gradient(135deg, #337aaa, #333eaa);
}
Colored shadow
.shadow-337aaa {
  box-shadow: 0 8px 24px rgb(51 122 170 / 0.35);
}

#4682b4 Steel Blue ΔE 3.85 #007ba7 Cerulean ΔE 4.14 #0072bb French Blue ΔE 4.26 #417dc1 Tufts Blue ΔE 4.97 #0073cf True Blue ΔE 5.49 #436b95 Queen Blue ΔE 6.85 #0067a5 Medium Persian Blue ΔE 7.24 #cc8555 Inverted #747474 Grayscale 

Steel Blue
#337aaa  rgb(51, 122, 170)  hsl(204, 54%, 43%)  Steel Blue
#aa6333  rgb(170, 99, 51)  hsl(24, 54%, 43%)  Sienna
#aa337a  rgb(170, 51, 122)  hsl(324, 54%, 43%)  Medium Violet Red
#7aaa33  rgb(122, 170, 51)  hsl(84, 54%, 43%)  Apple Green