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Recognised as Colour

#C9EF11

  • #C9EF11
  • Green
  • Light
  • Nearest: Green yellow

#C9EF11 is a green with RGB values 201, 239, 17 and HSL 70°, 87%, 50%. It is a light colour, so black text on it reaches 15.8:1 contrast (AAA for normal text). The nearest named colour is Green yellow.

Colour values

#C9EF11#C9EF11
HEX#C9EF11
RGBrgb(201, 239, 17)
RGB (0–1)0.7882, 0.9373, 0.0667
RGB percentages78.8%, 93.7%, 6.7%
HSLhsl(70.3, 87.4%, 50.2%)
HSV / HSBhsv(70.3, 92.9%, 93.7%)
CMYK15.9%, 0%, 92.9%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,233,937
CSS custom property--colour: #C9EF11;

Brightness & contrast

Relative luminance0.74191WCAG 2.x, 0 is black and 1 is white
Perceived brightness213.6 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 15.84:1
Contrast with white1.33:1WCAG normal text: Fail
Contrast with black15.84:1WCAG normal text: AAA
Greyscale equivalent#D7D7D7
Inverted#3610EE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFE000no red cones; affects about 1% of men; ΔE 29.6 from the original
Deuteranopia#FAE035no green cones; the most common form, about 1% of men; ΔE 28.8 from the original
Tritanopia#D5E2CCno blue cones; rare, and affects men and women equally; ΔE 80.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.33:1WCAG large text: Fail
Contrast with black, large text15.84:1WCAG large text: AAA

Named colours

Green yellow · ΔE 17.2Yellow · ΔE 18.8Yellow green · ΔE 22.6Lawn green · ΔE 32Chartreuse · ΔE 32.2Gold · ΔE 34
Nearest named CSS colourGreen yellow (#ADFF2F)ΔE 17.24, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3711EF
Analogous#EFA611, #5AEF11
Triadic#11C9EF, #EF11C9
Split complementary#115AEF, #A611EF
Tetradic#11EFA6, #3711EF, #EF115A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4FCD0
Lighter +30%#EAF9A0
Lighter +20%#DFF571
Lighter +10%#D4F241
Darker −10%#A1C00D
Darker −20%#79900A
Darker −30%#516106
Darker −40%#293103
More saturated +25%#D4FF01
Less saturated −25%#B4CF31

Channel breakdown

R201
G239
B17
Red201 (78.8%)
Green239 (93.7%)
Blue17 (6.7%)
Hue70.27°
Saturation (HSL)87.4%
Lightness50.2%
Dominant channelGreen
Hex per channelR C9 · G EF · B 11

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Every value on this page was computed from “c9ef11” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.