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Colour

#66FF66

  • #66FF66
  • Green
  • Light
  • Nearest: Spring green

#66FF66 is a green with RGB values 102, 255, 102 and HSL 120°, 100%, 70%. It is a light colour, so black text on it reaches 16.1:1 contrast (AAA for normal text). The nearest named colour is Spring green.

Colour values

#66FF66#66FF66
HEX#66FF66
HEX (short)#6F6
RGBrgb(102, 255, 102)
RGB (0–1)0.4, 1, 0.4
RGB percentages40%, 100%, 40%
HSLhsl(120, 100%, 70%)
HSV / HSBhsv(120, 60%, 100%)
CMYK60%, 0%, 60%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,750,054
CSS custom property--colour: #66FF66;

Brightness & contrast

Relative luminance0.75304WCAG 2.x, 0 is black and 1 is white
Perceived brightness206.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 16.06:1
Contrast with white1.31:1WCAG normal text: Fail
Contrast with black16.06:1WCAG normal text: AAA
Greyscale equivalent#D3D3D3
Inverted#990099

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFE955no red cones; affects about 1% of men; ΔE 61.6 from the original
Deuteranopia#F1DC73no green cones; the most common form, about 1% of men; ΔE 63.6 from the original
Tritanopia#49F8DEno blue cones; rare, and affects men and women equally; ΔE 63.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.31:1WCAG large text: Fail
Contrast with black, large text16.06:1WCAG large text: AAA

Named colours

Spring green · ΔE 15Limegreen · ΔE 17.1Lawn green · ΔE 25.2Chartreuse · ΔE 26Medium spring green · ΔE 27.5Green yellow · ΔE 27.8
Nearest named CSS colourSpring green (#00FF7F)ΔE 14.98, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF66FF
Analogous#B3FF66, #66FFB3
Triadic#6666FF, #FF6666
Split complementary#B366FF, #FF66B3
Tetradic#66B3FF, #FF66FF, #FFB366

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CCFFCC
Lighter +10%#99FF99
Darker −10%#33FF33
Darker −20%#00FF00
Darker −30%#00CC00
Darker −40%#009900
More saturated +25%#66FF66
Less saturated −25%#79EC79

Channel breakdown

R102
G255
B102
Red102 (40%)
Green255 (100%)
Blue102 (40%)
Hue120°
Saturation (HSL)100%
Lightness70%
Dominant channelGreen
Hex per channelR 66 · G FF · B 66

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Every value on this page was computed from “66ff66” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.