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Colour

#66CD00

  • #66CD00
  • Green
  • Dark
  • Nearest: Limegreen

#66CD00 is a green with RGB values 102, 205, 0 and HSL 90°, 100%, 40%. It is a dark colour, so black text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#66CD00#66CD00
HEX#66CD00
RGBrgb(102, 205, 0)
RGB (0–1)0.4, 0.8039, 0
RGB percentages40%, 80.4%, 0%
HSLhsl(90.1, 100%, 40.2%)
HSV / HSBhsv(90.1, 100%, 80.4%)
CMYK50.2%, 0%, 100%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,737,152
CSS custom property--colour: #66CD00;

Brightness & contrast

Relative luminance0.46487WCAG 2.x, 0 is black and 1 is white
Perceived brightness166.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.3:1
Contrast with white2.04:1WCAG normal text: Fail
Contrast with black10.3:1WCAG normal text: AAA
Greyscale equivalent#A8A8A8
Inverted#9932FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D5BB00no red cones; affects about 1% of men; ΔE 51.9 from the original
Deuteranopia#C7B22Bno green cones; the most common form, about 1% of men; ΔE 51.5 from the original
Tritanopia#61C5AEno blue cones; rare, and affects men and women equally; ΔE 73.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.04:1WCAG large text: Fail
Contrast with black, large text10.3:1WCAG large text: AAA

Named colours

Limegreen · ΔE 15Yellow green · ΔE 20.6Green yellow · ΔE 20.8Lawn green · ΔE 22Chartreuse · ΔE 23.2Lime · ΔE 33.6
Nearest named CSS colourLimegreen (#32CD32)ΔE 15.04, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6700CD
Analogous#CDCD00, #00CD00
Triadic#0066CD, #CD0066
Split complementary#0000CD, #CD00CD
Tetradic#00CDCD, #6700CD, #CD0000

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCFF9A
Lighter +30%#B3FF67
Lighter +20%#99FF34
Lighter +10%#7FFF01
Darker −10%#4D9A00
Darker −20%#336700
Darker −30%#1A3400
Darker −40%#000100
More saturated +25%#66CD00
Less saturated −25%#66B31A

Channel breakdown

R102
G205
B0
Red102 (40%)
Green205 (80.4%)
Blue0 (0%)
Hue90.15°
Saturation (HSL)100%
Lightness40.2%
Dominant channelGreen
Hex per channelR 66 · G CD · B 00

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Every value on this page was computed from “66cd00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.