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Recognised as Colour

#42FF78

  • #42FF78
  • Green
  • Light
  • Nearest: Spring green

#42FF78 is a green with RGB values 66, 255, 120 and HSL 137°, 100%, 63%. It is a light colour, so black text on it reaches 15.8:1 contrast (AAA for normal text). The nearest named colour is Spring green.

Colour values

#42FF78#42FF78
HEX#42FF78
RGBrgb(66, 255, 120)
RGB (0–1)0.2588, 1, 0.4706
RGB percentages25.9%, 100%, 47.1%
HSLhsl(137.1, 100%, 62.9%)
HSV / HSBhsv(137.1, 74.1%, 100%)
CMYK74.1%, 0%, 52.9%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,390,776
CSS custom property--colour: #42FF78;

Brightness & contrast

Relative luminance0.74034WCAG 2.x, 0 is black and 1 is white
Perceived brightness202.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 15.81:1
Contrast with white1.33:1WCAG normal text: Fail
Contrast with black15.81:1WCAG normal text: AAA
Greyscale equivalent#CDCDCD
Inverted#BD0087

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFE96Cno red cones; affects about 1% of men; ΔE 67.1 from the original
Deuteranopia#ECD982no green cones; the most common form, about 1% of men; ΔE 68.6 from the original
Tritanopia#00FAE0no blue cones; rare, and affects men and women equally; ΔE 55.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.33:1WCAG large text: Fail
Contrast with black, large text15.81:1WCAG large text: AAA

Named colours

Spring green · ΔE 5.3Medium spring green · ΔE 18.8Limegreen · ΔE 20.4Pale green · ΔE 28Light green · ΔE 30.5Lawn green · ΔE 34.4
Nearest named CSS colourSpring green (#00FF7F)ΔE 5.35, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF42C9
Analogous#6BFF42, #42FFD6
Triadic#7842FF, #FF7842
Split complementary#D642FF, #FF426B
Tetradic#426BFF, #FF42C9, #FFD642

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DBFFE5
Lighter +20%#A8FFC1
Lighter +10%#75FF9C
Darker −10%#0FFF54
Darker −20%#00DB3F
Darker −30%#00A830
Darker −40%#007521
More saturated +25%#42FF78
Less saturated −25%#5AE782

Channel breakdown

R66
G255
B120
Red66 (25.9%)
Green255 (100%)
Blue120 (47.1%)
Hue137.14°
Saturation (HSL)100%
Lightness62.94%
Dominant channelGreen
Hex per channelR 42 · G FF · B 78

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Every value on this page was computed from “42ff78” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.