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Recognised as Colour

#66FF3D

  • #66FF3D
  • Green
  • Light
  • Nearest: Lawn green

#66FF3D is a green with RGB values 102, 255, 61 and HSL 107°, 100%, 62%. It is a light colour, so black text on it reaches 15.9:1 contrast (AAA for normal text). The nearest named colour is Lawn green.

Colour values

#66FF3D#66FF3D
HEX#66FF3D
RGBrgb(102, 255, 61)
RGB (0–1)0.4, 1, 0.2392
RGB percentages40%, 100%, 23.9%
HSLhsl(107.3, 100%, 62%)
HSV / HSBhsv(107.3, 76.1%, 100%)
CMYK60%, 0%, 76.1%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,750,013
CSS custom property--colour: #66FF3D;

Brightness & contrast

Relative luminance0.74682WCAG 2.x, 0 is black and 1 is white
Perceived brightness204.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 15.94:1
Contrast with white1.32:1WCAG normal text: Fail
Contrast with black15.94:1WCAG normal text: AAA
Greyscale equivalent#D0D0D0
Inverted#9900C2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFE802no red cones; affects about 1% of men; ΔE 64.1 from the original
Deuteranopia#F3DB53no green cones; the most common form, about 1% of men; ΔE 66.2 from the original
Tritanopia#51F7DBno blue cones; rare, and affects men and women equally; ΔE 77.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.32:1WCAG large text: Fail
Contrast with black, large text15.94:1WCAG large text: AAA

Named colours

Lawn green · ΔE 11.4Chartreuse · ΔE 12.1Lime · ΔE 16.2Green yellow · ΔE 21.5Limegreen · ΔE 21.9Spring green · ΔE 27.9
Nearest named CSS colourLawn green (#7CFC00)ΔE 11.39, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D63DFF
Analogous#C7FF3D, #3DFF75
Triadic#3D66FF, #FF3D66
Split complementary#753DFF, #FF3DC7
Tetradic#3DC7FF, #D63DFF, #FF753D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DFFFD6
Lighter +20%#B6FFA3
Lighter +10%#8EFF70
Darker −10%#3EFF0A
Darker −20%#2DD600
Darker −30%#22A300
Darker −40%#187000
More saturated +25%#66FF3D
Less saturated −25%#74E755

Channel breakdown

R102
G255
B61
Red102 (40%)
Green255 (100%)
Blue61 (23.9%)
Hue107.32°
Saturation (HSL)100%
Lightness61.96%
Dominant channelGreen
Hex per channelR 66 · G FF · B 3D

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Every value on this page was computed from “66ff3d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.