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Recognised as Colour

#40B784

  • #40B784
  • Cyan
  • Dark
  • Nearest: Medium seagreen

#40B784 is a cyan with RGB values 64, 183, 132 and HSL 154°, 48%, 48%. It is a dark colour, so black text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#40B784#40B784
HEX#40B784
RGBrgb(64, 183, 132)
RGB (0–1)0.251, 0.7176, 0.5176
RGB percentages25.1%, 71.8%, 51.8%
HSLhsl(154.3, 48.2%, 48.4%)
HSV / HSBhsv(154.3, 65%, 71.8%)
CMYK65%, 0%, 27.9%, 28.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,241,284
CSS custom property--colour: #40B784;

Brightness & contrast

Relative luminance0.36623WCAG 2.x, 0 is black and 1 is white
Perceived brightness151.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.32:1
Contrast with white2.52:1WCAG normal text: Fail
Contrast with black8.32:1WCAG normal text: AAA
Greyscale equivalent#9A9A9A
Inverted#BF487B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B4AA81no red cones; affects about 1% of men; ΔE 42.8 from the original
Deuteranopia#A59E87no green cones; the most common form, about 1% of men; ΔE 44 from the original
Tritanopia#00B7A9no blue cones; rare, and affects men and women equally; ΔE 20.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.52:1WCAG large text: Fail
Contrast with black, large text8.32:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 8.6Medium aquamarine · ΔE 13.7Sea green · ΔE 16.8Dark seagreen · ΔE 22Light seagreen · ΔE 24Turquoise · ΔE 25
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 8.62, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B74073
Analogous#40B749, #40AEB7
Triadic#8440B7, #B78440
Split complementary#B740AE, #B74940
Tetradic#4940B7, #B74073, #AEB740

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D3F0E4
Lighter +30%#AEE2CC
Lighter +20%#88D5B4
Lighter +10%#62C89C
Darker −10%#339169
Darker −20%#266B4D
Darker −30%#184632
Darker −40%#0B2017
More saturated +25%#21D688
Less saturated −25%#5F9880

Channel breakdown

R64
G183
B132
Red64 (25.1%)
Green183 (71.8%)
Blue132 (51.8%)
Hue154.29°
Saturation (HSL)48.18%
Lightness48.43%
Dominant channelGreen
Hex per channelR 40 · G B7 · B 84

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Every value on this page was computed from “40b784” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.