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Recognised as Colour

#40DFBB

  • #40DFBB
  • Cyan
  • Light
  • Nearest: Turquoise

#40DFBB is a cyan with RGB values 64, 223, 187 and HSL 166°, 71%, 56%. It is a light colour, so black text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Turquoise.

Colour values

#40DFBB#40DFBB
HEX#40DFBB
RGBrgb(64, 223, 187)
RGB (0–1)0.251, 0.8745, 0.7333
RGB percentages25.1%, 87.5%, 73.3%
HSLhsl(166.4, 71.3%, 56.3%)
HSV / HSBhsv(166.4, 71.3%, 87.5%)
CMYK71.3%, 0%, 16.1%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,251,579
CSS custom property--colour: #40DFBB;

Brightness & contrast

Relative luminance0.57453WCAG 2.x, 0 is black and 1 is white
Perceived brightness185.5 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.49:1
Contrast with white1.68:1WCAG normal text: Fail
Contrast with black12.49:1WCAG normal text: AAA
Greyscale equivalent#BBBBBB
Inverted#BF2044

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D7D1B9no red cones; affects about 1% of men; ΔE 47.7 from the original
Deuteranopia#C2C1BEno green cones; the most common form, about 1% of men; ΔE 49.1 from the original
Tritanopia#00E1D4no blue cones; rare, and affects men and women equally; ΔE 12.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.68:1WCAG large text: Fail
Contrast with black, large text12.49:1WCAG large text: AAA

Named colours

Turquoise · ΔE 11.1Medium aquamarine · ΔE 12Aquamarine · ΔE 12.7Medium turquoise · ΔE 18.8Dark turquoise · ΔE 22Light seagreen · ΔE 22.3
Nearest named CSS colourTurquoise (#40E0D0)ΔE 11.14, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DF4064
Analogous#40DF6C, #40B3DF
Triadic#BB40DF, #DFBB40
Split complementary#DF40B3, #DF6C40
Tetradic#6C40DF, #DF4064, #B3DF40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EFFCF9
Lighter +30%#C3F5EA
Lighter +20%#97EEDA
Lighter +10%#6CE6CB
Darker −10%#22CAA4
Darker −20%#1B9E81
Darker −30%#13735D
Darker −40%#0C473A
More saturated +25%#24FBCA
Less saturated −25%#5CC3AC

Channel breakdown

R64
G223
B187
Red64 (25.1%)
Green223 (87.5%)
Blue187 (73.3%)
Hue166.42°
Saturation (HSL)71.3%
Lightness56.27%
Dominant channelGreen
Hex per channelR 40 · G DF · B BB

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