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Recognised as Colour

#40BF00

  • #40BF00
  • Green
  • Dark
  • Nearest: Limegreen

#40BF00 is a green with RGB values 64, 191, 0 and HSL 100°, 100%, 37%. It is a dark colour, so black text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#40BF00#40BF00
HEX#40BF00
RGBrgb(64, 191, 0)
RGB (0–1)0.251, 0.749, 0
RGB percentages25.1%, 74.9%, 0%
HSLhsl(99.9, 100%, 37.5%)
HSV / HSBhsv(99.9, 100%, 74.9%)
CMYK66.5%, 0%, 100%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,243,200
CSS custom property--colour: #40BF00;

Brightness & contrast

Relative luminance0.38352WCAG 2.x, 0 is black and 1 is white
Perceived brightness150.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.67:1
Contrast with white2.42:1WCAG normal text: Fail
Contrast with black8.67:1WCAG normal text: AAA
Greyscale equivalent#969696
Inverted#BF40FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C5AD00no red cones; affects about 1% of men; ΔE 57 from the original
Deuteranopia#B6A329no green cones; the most common form, about 1% of men; ΔE 56.7 from the original
Tritanopia#2BB8A2no blue cones; rare, and affects men and women equally; ΔE 70.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.42:1WCAG large text: Fail
Contrast with black, large text8.67:1WCAG large text: AAA

Named colours

Limegreen · ΔE 9.2Yellow green · ΔE 25.6Lawn green · ΔE 27.3Chartreuse · ΔE 28.6Green yellow · ΔE 29.2Green · ΔE 30.4
Nearest named CSS colourLimegreen (#32CD32)ΔE 9.2, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F00BF
Analogous#9FBF00, #00BF20
Triadic#0040BF, #BF0040
Split complementary#2000BF, #BF009F
Tetradic#009FBF, #7F00BF, #BF2000

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B3FF8C
Lighter +30%#91FF59
Lighter +20%#6FFF26
Lighter +10%#51F200
Darker −10%#2F8C00
Darker −20%#1E5900
Darker −30%#0D2600
Darker −40%#000000
More saturated +25%#40BF00
Less saturated −25%#48A718

Channel breakdown

R64
G191
B0
Red64 (25.1%)
Green191 (74.9%)
Blue0 (0%)
Hue99.9°
Saturation (HSL)100%
Lightness37.45%
Dominant channelGreen
Hex per channelR 40 · G BF · B 00

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Every value on this page was computed from “40bf00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.