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Recognised as Colour

#66FFAC

  • #66FFAC
  • Green
  • Light
  • Nearest: Medium spring green

#66FFAC is a green with RGB values 102, 255, 172 and HSL 147°, 100%, 70%. It is a light colour, so black text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Medium spring green.

Colour values

#66FFAC#66FFAC
HEX#66FFAC
RGBrgb(102, 255, 172)
RGB (0–1)0.4, 1, 0.6745
RGB percentages40%, 100%, 67.5%
HSLhsl(147.5, 100%, 70%)
HSV / HSBhsv(147.5, 60%, 100%)
CMYK60%, 0%, 32.5%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,750,124
CSS custom property--colour: #66FFAC;

Brightness & contrast

Relative luminance0.77323WCAG 2.x, 0 is black and 1 is white
Perceived brightness211.3 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 16.46:1
Contrast with white1.28:1WCAG normal text: Fail
Contrast with black16.46:1WCAG normal text: AAA
Greyscale equivalent#D8D8D8
Inverted#990053

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FEECA7no red cones; affects about 1% of men; ΔE 55.8 from the original
Deuteranopia#E9DEB1no green cones; the most common form, about 1% of men; ΔE 55.9 from the original
Tritanopia#22FDE9no blue cones; rare, and affects men and women equally; ΔE 32.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.28:1WCAG large text: Fail
Contrast with black, large text16.46:1WCAG large text: AAA

Named colours

Medium spring green · ΔE 13.1Pale green · ΔE 15Light green · ΔE 16Aquamarine · ΔE 22.6Spring green · ΔE 26.4Medium seagreen · ΔE 27.6
Nearest named CSS colourMedium spring green (#00FA9A)ΔE 13.07, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF66B9
Analogous#6CFF66, #66FFF9
Triadic#AC66FF, #FFAC66
Split complementary#F966FF, #FF666C
Tetradic#666CFF, #FF66B9, #FFF966

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CCFFE3
Lighter +10%#99FFC8
Darker −10%#33FF90
Darker −20%#00FF75
Darker −30%#00CC5D
Darker −40%#009946
More saturated +25%#66FFAC
Less saturated −25%#79ECAE

Channel breakdown

R102
G255
B172
Red102 (40%)
Green255 (100%)
Blue172 (67.5%)
Hue147.45°
Saturation (HSL)100%
Lightness70%
Dominant channelGreen
Hex per channelR 66 · G FF · B AC

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