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Colour

#66C804

  • #66C804
  • Green
  • Dark
  • Nearest: Limegreen

#66C804 is a green with RGB values 102, 200, 4 and HSL 90°, 96%, 40%. It is a dark colour, so black text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#66C804#66C804
HEX#66C804
RGBrgb(102, 200, 4)
RGB (0–1)0.4, 0.7843, 0.0157
RGB percentages40%, 78.4%, 1.6%
HSLhsl(90, 96.1%, 40%)
HSV / HSBhsv(90, 98%, 78.4%)
CMYK49%, 0%, 98%, 21.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,735,876
CSS custom property--colour: #66C804;

Brightness & contrast

Relative luminance0.44142WCAG 2.x, 0 is black and 1 is white
Perceived brightness163.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.83:1
Contrast with white2.14:1WCAG normal text: Fail
Contrast with black9.83:1WCAG normal text: AAA
Greyscale equivalent#A5A5A5
Inverted#9937FB

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D0B600no red cones; affects about 1% of men; ΔE 50.4 from the original
Deuteranopia#C3AE2Bno green cones; the most common form, about 1% of men; ΔE 49.9 from the original
Tritanopia#62C0AAno blue cones; rare, and affects men and women equally; ΔE 72.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.14:1WCAG large text: Fail
Contrast with black, large text9.83:1WCAG large text: AAA

Named colours

Limegreen · ΔE 15.2Yellow green · ΔE 18.6Green yellow · ΔE 22.5Lawn green · ΔE 24.8Chartreuse · ΔE 26.1Green · ΔE 33.9
Nearest named CSS colourLimegreen (#32CD32)ΔE 15.19, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6604C8
Analogous#C8C804, #04C804
Triadic#0466C8, #C80466
Split complementary#0404C8, #C804C8
Tetradic#04C8C8, #6604C8, #C80404

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCFD9B
Lighter +30%#B3FC69
Lighter +20%#99FB37
Lighter +10%#80FA05
Darker −10%#4D9603
Darker −20%#336402
Darker −30%#1A3201
Darker −40%#000000
More saturated +25%#66CC00
Less saturated −25%#66AF1E

Channel breakdown

R102
G200
B4
Red102 (40%)
Green200 (78.4%)
Blue4 (1.6%)
Hue90°
Saturation (HSL)96.08%
Lightness40%
Dominant channelGreen
Hex per channelR 66 · G C8 · B 04

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Every value on this page was computed from “66c804” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.