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Recognised as Colour

#66C500

  • #66C500
  • Green
  • Dark
  • Nearest: Limegreen

#66C500 is a green with RGB values 102, 197, 0 and HSL 89°, 100%, 39%. It is a dark colour, so black text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#66C500#66C500
HEX#66C500
RGBrgb(102, 197, 0)
RGB (0–1)0.4, 0.7725, 0
RGB percentages40%, 77.3%, 0%
HSLhsl(88.9, 100%, 38.6%)
HSV / HSBhsv(88.9, 100%, 77.3%)
CMYK48.2%, 0%, 100%, 22.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,735,104
CSS custom property--colour: #66C500;

Brightness & contrast

Relative luminance0.42757WCAG 2.x, 0 is black and 1 is white
Perceived brightness160.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.55:1
Contrast with white2.2:1WCAG normal text: Fail
Contrast with black9.55:1WCAG normal text: AAA
Greyscale equivalent#A3A3A3
Inverted#993AFF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CDB400no red cones; affects about 1% of men; ΔE 49.1 from the original
Deuteranopia#C0AC29no green cones; the most common form, about 1% of men; ΔE 48.5 from the original
Tritanopia#63BDA7no blue cones; rare, and affects men and women equally; ΔE 71.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.2:1WCAG large text: Fail
Contrast with black, large text9.55:1WCAG large text: AAA

Named colours

Limegreen · ΔE 15.9Yellow green · ΔE 17.8Green yellow · ΔE 23.4Lawn green · ΔE 26.2Chartreuse · ΔE 27.4Green · ΔE 32.9
Nearest named CSS colourLimegreen (#32CD32)ΔE 15.88, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5F00C5
Analogous#C5C200, #04C500
Triadic#0066C5, #C50066
Split complementary#0004C5, #C100C5
Tetradic#00C5C2, #5F00C5, #C50004

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CAFF92
Lighter +30%#B2FF5F
Lighter +20%#99FF2C
Lighter +10%#80F800
Darker −10%#4C9200
Darker −20%#315F00
Darker −30%#172C00
Darker −40%#000000
More saturated +25%#66C500
Less saturated −25%#65AC19

Channel breakdown

R102
G197
B0
Red102 (40%)
Green197 (77.3%)
Blue0 (0%)
Hue88.93°
Saturation (HSL)100%
Lightness38.63%
Dominant channelGreen
Hex per channelR 66 · G C5 · B 00

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Every value on this page was computed from “66c500” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.