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Recognised as Colour

#66D538

  • #66D538
  • Green
  • Light
  • Nearest: Limegreen

#66D538 is a green with RGB values 102, 213, 56 and HSL 102°, 65%, 53%. It is a light colour, so black text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#66D538#66D538
HEX#66D538
RGBrgb(102, 213, 56)
RGB (0–1)0.4, 0.8353, 0.2196
RGB percentages40%, 83.5%, 22%
HSLhsl(102.4, 65.1%, 52.7%)
HSV / HSBhsv(102.4, 73.7%, 83.5%)
CMYK52.1%, 0%, 73.7%, 16.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,739,256
CSS custom property--colour: #66D538;

Brightness & contrast

Relative luminance0.50699WCAG 2.x, 0 is black and 1 is white
Perceived brightness173.5 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.14:1
Contrast with white1.89:1WCAG normal text: Fail
Contrast with black11.14:1WCAG normal text: AAA
Greyscale equivalent#B2B2B2
Inverted#992AC7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#DCC218no red cones; affects about 1% of men; ΔE 53.9 from the original
Deuteranopia#CDB948no green cones; the most common form, about 1% of men; ΔE 52.7 from the original
Tritanopia#5DCEB7no blue cones; rare, and affects men and women equally; ΔE 65.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.89:1WCAG large text: Fail
Contrast with black, large text11.14:1WCAG large text: AAA

Named colours

Limegreen · ΔE 9.9Yellow green · ΔE 20.5Green yellow · ΔE 24.5Lawn green · ΔE 26.4Chartreuse · ΔE 27.6Spring green · ΔE 27.7
Nearest named CSS colourLimegreen (#32CD32)ΔE 9.91, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A738D5
Analogous#B4D538, #38D559
Triadic#3866D5, #D53866
Split complementary#5938D5, #D538B4
Tetradic#38B4D5, #A738D5, #D55938

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E8F9E0
Lighter +30%#C7F0B6
Lighter +20%#A7E78C
Lighter +10%#86DE62
Darker −10%#50B426
Darker −20%#3D8A1D
Darker −30%#2A6014
Darker −40%#18360B
More saturated +25%#5AF31A
Less saturated −25%#72B756

Channel breakdown

R102
G213
B56
Red102 (40%)
Green213 (83.5%)
Blue56 (22%)
Hue102.42°
Saturation (HSL)65.15%
Lightness52.75%
Dominant channelGreen
Hex per channelR 66 · G D5 · B 38

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Every value on this page was computed from “66d538” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.