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#66FF99

#66ff99 ≈ Medium Spring Green

  • green
  • Lightness: high
  • Saturation: strong
  • Balanced
  • Web safe
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#66ff99 is a color from the green family, with high lightness and strong saturation. In the RGB model it is made of 40% red, 100% green and 60% blue; printed in CMYK it uses 60% cyan, 0% magenta, 40% yellow and 0% black. Its hue angle is 140°, with 100% saturation and 70% lightness in HSL. It sits between warm and cool, and is often associated with nature, health and balance. Designers typically use it for eco-friendly brands, health and wellness and call-to-action buttons. Black text on this color reaches a contrast ratio of 16.33:1 (WCAG AAA). The closest named color is Medium Spring Green (#00fa9a), ΔE 3.8.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#66ff99
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.7664

Complementary

  1. #66ff99
  2. #ff66cc

Split complementary

  1. #66ff99
  2. #e566ff
  3. #ff6680

Analogous

  1. #80ff66
  2. #66ff99
  3. #66ffe6

Triadic

  1. #66ff99
  2. #9966ff
  3. #ff9966

Tetradic

  1. #66ff99
  2. #66ccff
  3. #ff66cc
  4. #ff9966

Square

  1. #66ff99
  2. #6680ff
  3. #ff66cc
  4. #ffe666

Monochromatic

  1. #00cc44
  2. #1aff66
  3. #66ff99
  4. #b3ffcc
  5. #ebfff1

Shades

#66ff99 mixed progressively with black.

  1. #66ff99
  2. #5ce68a
  3. #52cc7a
  4. #47b36b
  5. #3d995c
  6. #33804d
  7. #29663d
  8. #1f4d2e
  9. #14331f
  10. #0a1a0f
  11. #000000

Tints

#66ff99 mixed progressively with white.

  1. #66ff99
  2. #75ffa3
  3. #85ffad
  4. #94ffb8
  5. #a3ffc2
  6. #b3ffcc
  7. #c2ffd6
  8. #d1ffe0
  9. #e0ffeb
  10. #f0fff5
  11. #ffffff

Tones

#66ff99 mixed progressively with gray.

  1. #66ff99
  2. #69f297
  3. #6be694
  4. #6ed992
  5. #70cc8f
  6. #73c08d
  7. #76b38a
  8. #78a688
  9. #7b9985
  10. #7d8d83
  11. #808080

Readable text 1.29:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕
Readable text 16.33:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓

Achromatopsia #e3e3e3 ≈ 0.003% of males
Achromatomaly #beefc9 ≈ 0.001% of males
Protanopia #ffeb92 ≈ 1.01% of males
Deuteranopia #ecdda0 ≈ 1.27% of males
Tritanopia #33fbe6 ≈ 0.0001% of males
Protanomaly #d4f395 ≈ 1.08% of males
Deuteranomaly #c5ec9d ≈ 4.63% of males
Tritanomaly #4cfdcc ≈ 0.0002% of males
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Text in this color

Background in this color

Border in this color

Text color
.text-66ff99 {
  color: #66ff99;
}
Background
.bg-66ff99 {
  background-color: #66ff99;
  color: #000000;
}
Border
.border-66ff99 {
  border: 2px solid #66ff99;
}
CSS variables
:root {
  --color-primary: #66ff99;
  --color-primary-rgb: 102 255 153;
  --color-primary-hsl: 140 100% 70%;
}
Gradient
.gradient-66ff99 {
  background: linear-gradient(135deg, #66ff99, #66ffe6);
}
Colored shadow
.shadow-66ff99 {
  box-shadow: 0 8px 24px rgb(102 255 153 / 0.35);
}

#00fa9a Medium Spring Green ΔE 3.80 #00ff7f Spring Green ΔE 3.99 #98ff98 Mint Green ΔE 4.55 #98fb98 Pale Green ΔE 4.67 #90ee90 Light Green ΔE 5.54 #77dd77 Pastel Green ΔE 8.02 #a8e4a0 Granny Smith Apple ΔE 10.08 #990066 Inverted #e3e3e3 Grayscale 

Medium Spring Green
#66ff99  rgb(102, 255, 153)  hsl(140, 100%, 70%)  Medium Spring Green
#ff66cc  rgb(255, 102, 204)  hsl(320, 100%, 70%)  Rose Pink
#9966ff  rgb(153, 102, 255)  hsl(260, 100%, 70%)  Medium Slate Blue
#ff9966  rgb(255, 153, 102)  hsl(20, 100%, 70%)  Light Salmon