ColorTool
Log in
#51900A

#51900a ≈ Olive Drab

  • yellow-green
  • Lightness: low
  • Saturation: strong
  • Balanced
Check contrast Explore in graph Random color

#51900a is a color from the yellow-green family, with low lightness and strong saturation. In the RGB model it is made of 31.76% red, 56.47% green and 3.92% blue; printed in CMYK it uses 43.75% cyan, 0% magenta, 93.06% yellow and 43.53% black. Its hue angle is 88.21°, with 87.01% saturation and 30.2% lightness in HSL. It sits between warm and cool, and is often associated with freshness, growth and vitality. Designers typically use it for eco-friendly brands, health and wellness and corporate identities. Black text on this color reaches a contrast ratio of 5.34:1 (WCAG AA). The closest named color is Olive Drab (#6b8e23), ΔE 4.56.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#669900
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.2172

Complementary

  1. #51900a
  2. #490a90

Split complementary

  1. #51900a
  2. #0a0e90
  3. #8c0a90

Analogous

  1. #908c0a
  2. #51900a
  3. #0e900a

Triadic

  1. #51900a
  2. #0a5190
  3. #900a51

Tetradic

  1. #51900a
  2. #0a9049
  3. #490a90
  4. #900a51

Square

  1. #51900a
  2. #0a908c
  3. #490a90
  4. #900a0e

Monochromatic

  1. #0b1301
  2. #294805
  3. #51900a
  4. #79d80f
  5. #9ff241

Shades

#51900a mixed progressively with black.

  1. #51900a
  2. #498209
  3. #417308
  4. #396507
  5. #315606
  6. #294805
  7. #203a04
  8. #182b03
  9. #101d02
  10. #080e01
  11. #000000

Tints

#51900a mixed progressively with white.

  1. #51900a
  2. #629b23
  3. #74a63b
  4. #85b154
  5. #97bc6c
  6. #a8c885
  7. #b9d39d
  8. #cbdeb6
  9. #dce9ce
  10. #eef4e7
  11. #ffffff

Tones

#51900a mixed progressively with gray.

  1. #51900a
  2. #568e16
  3. #5a8d22
  4. #5f8b2d
  5. #648a39
  6. #698845
  7. #6d8651
  8. #72855d
  9. #778368
  10. #7b8274
  11. #808080

Readable text 3.93:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 5.34:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #808080 ≈ 0.003% of males
Achromatomaly #708766 ≈ 0.001% of males
Protanopia #968400 ≈ 1.01% of males
Deuteranopia #8e7f1f ≈ 1.27% of males
Tritanopia #518a7a ≈ 0.0001% of males
Protanomaly #808900 ≈ 1.08% of males
Deuteranomaly #7a8619 ≈ 4.63% of males
Tritanomaly #518c60 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-51900a {
  color: #51900a;
}
Background
.bg-51900a {
  background-color: #51900a;
  color: #000000;
}
Border
.border-51900a {
  border: 2px solid #51900a;
}
CSS variables
:root {
  --color-primary: #51900a;
  --color-primary-rgb: 81 144 10;
  --color-primary-hsl: 88 87% 30%;
}
Gradient
.gradient-51900a {
  background: linear-gradient(135deg, #51900a, #0e900a);
}
Colored shadow
.shadow-51900a {
  box-shadow: 0 8px 24px rgb(81 144 10 / 0.35);
}

#6b8e23 Olive Drab ΔE 4.56 #568203 Avocado ΔE 5.17 #009000 Islamic Green ΔE 6.03 #228b22 Forest Green ΔE 6.67 #138808 India Green ΔE 6.82 #507d2a Sap Green ΔE 7.95 #008000 Green ΔE 9.13 #ae6ff5 Inverted #808080 Grayscale 

Olive Drab
#51900a  rgb(81, 144, 10)  hsl(88, 87%, 30%)  Olive Drab
#490a90  rgb(73, 10, 144)  hsl(268, 87%, 30%)  Indigo
#0a5190  rgb(10, 81, 144)  hsl(208, 87%, 30%)  Yale Blue
#900a51  rgb(144, 10, 81)  hsl(328, 87%, 30%)  Jazzberry Jam