ColorTool
Log in
#157BB3

#157bb3 ≈ Cerulean

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

#157bb3 is a color from the azure family, with low lightness and strong saturation. In the RGB model it is made of 8.24% red, 48.24% green and 70.2% blue; printed in CMYK it uses 88.27% cyan, 31.28% magenta, 0% yellow and 29.8% black. Its hue angle is 201.27°, with 79% saturation and 39.22% 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 4.65:1 (WCAG AA). The closest named color is Cerulean (#007ba7), ΔE 3.81.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#0066cc
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1758

Complementary

  1. #157bb3
  2. #b34d15

Split complementary

  1. #157bb3
  2. #b3152c
  3. #b39c15

Analogous

  1. #15b39c
  2. #157bb3
  3. #152cb3

Triadic

  1. #157bb3
  2. #b3157b
  3. #7bb315

Tetradic

  1. #157bb3
  2. #4d15b3
  3. #b34d15
  4. #7bb315

Square

  1. #157bb3
  2. #9c15b3
  3. #b34d15
  4. #2cb315

Monochromatic

  1. #051d2a
  2. #0d4c6f
  3. #157bb3
  4. #2ea5e6
  5. #73c3ef

Shades

#157bb3 mixed progressively with black.

  1. #157bb3
  2. #136fa1
  3. #11628f
  4. #0f567d
  5. #0d4a6b
  6. #0b3e5a
  7. #083148
  8. #062536
  9. #041924
  10. #020c12
  11. #000000

Tints

#157bb3 mixed progressively with white.

  1. #157bb3
  2. #2c88bb
  3. #4495c2
  4. #5ba3ca
  5. #73b0d1
  6. #8abdd9
  7. #a1cae1
  8. #b9d7e8
  9. #d0e5f0
  10. #e8f2f7
  11. #ffffff

Tones

#157bb3 mixed progressively with gray.

  1. #157bb3
  2. #207cae
  3. #2a7ca9
  4. #357da4
  5. #407d9f
  6. #4b7e9a
  7. #557e94
  8. #607f8f
  9. #6b7f8a
  10. #758085
  11. #808080

Readable text 4.65:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.52:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #747474 ≈ 0.003% of males
Achromatomaly #5d7792 ≈ 0.001% of males
Protanopia #607cb5 ≈ 1.01% of males
Deuteranopia #4b6eb2 ≈ 1.27% of males
Tritanopia #00898f ≈ 0.0001% of males
Protanomaly #4d7cb4 ≈ 1.08% of males
Deuteranomaly #3c74b2 ≈ 4.63% of males
Tritanomaly #00849f ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-157bb3 {
  color: #157bb3;
}
Background
.bg-157bb3 {
  background-color: #157bb3;
  color: #ffffff;
}
Border
.border-157bb3 {
  border: 2px solid #157bb3;
}
CSS variables
:root {
  --color-primary: #157bb3;
  --color-primary-rgb: 21 123 179;
  --color-primary-hsl: 201 79% 39%;
}
Gradient
.gradient-157bb3 {
  background: linear-gradient(135deg, #157bb3, #152cb3);
}
Colored shadow
.shadow-157bb3 {
  box-shadow: 0 8px 24px rgb(21 123 179 / 0.35);
}

#007ba7 Cerulean ΔE 3.81 #0072bb French Blue ΔE 4.40 #4682b4 Steel Blue ΔE 4.63 #417dc1 Tufts Blue ΔE 5.92 #0073cf True Blue ΔE 6.07 #006994 Sea Blue ΔE 7.38 #0067a5 Medium Persian Blue ΔE 7.52 #ea844c Inverted #747474 Grayscale 

Cerulean
#157bb3  rgb(21, 123, 179)  hsl(201, 79%, 39%)  Cerulean
#b34d15  rgb(179, 77, 21)  hsl(21, 79%, 39%)  Rust
#b3157b  rgb(179, 21, 123)  hsl(321, 79%, 39%)  Medium Violet Red
#7bb315  rgb(123, 179, 21)  hsl(81, 79%, 39%)  Apple Green