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Recognised as Colour

#40D99D

  • #40D99D
  • Cyan
  • Light
  • Nearest: Medium seagreen

#40D99D is a cyan with RGB values 64, 217, 157 and HSL 156°, 67%, 55%. It is a light colour, so black text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#40D99D#40D99D
HEX#40D99D
RGBrgb(64, 217, 157)
RGB (0–1)0.251, 0.851, 0.6157
RGB percentages25.1%, 85.1%, 61.6%
HSLhsl(156.5, 66.8%, 55.1%)
HSV / HSBhsv(156.5, 70.5%, 85.1%)
CMYK70.5%, 0%, 27.6%, 14.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,250,013
CSS custom property--colour: #40D99D;

Brightness & contrast

Relative luminance0.5315WCAG 2.x, 0 is black and 1 is white
Perceived brightness178 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.63:1
Contrast with white1.81:1WCAG normal text: Fail
Contrast with black11.63:1WCAG normal text: AAA
Greyscale equivalent#B4B4B4
Inverted#BF2662

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D6C99Ano red cones; affects about 1% of men; ΔE 51.4 from the original
Deuteranopia#C2BBA1no green cones; the most common form, about 1% of men; ΔE 51.9 from the original
Tritanopia#00D9C9no blue cones; rare, and affects men and women equally; ΔE 23.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.81:1WCAG large text: Fail
Contrast with black, large text11.63:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 15Aquamarine · ΔE 18.3Medium aquamarine · ΔE 18.3Light green · ΔE 21.8Medium spring green · ΔE 24.1Turquoise · ΔE 24.5
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 15.02, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D9407C
Analogous#40D951, #40C8D9
Triadic#9D40D9, #D99D40
Split complementary#D940C8, #D95140
Tetradic#5140D9, #D9407C, #C8D940

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EAFBF4
Lighter +30%#C0F2DE
Lighter +20%#95EAC9
Lighter +10%#6BE1B3
Darker −10%#26C084
Darker −20%#1E9566
Darker −30%#156B49
Darker −40%#0D402C
More saturated +25%#23F6A3
Less saturated −25%#5DBC97

Channel breakdown

R64
G217
B157
Red64 (25.1%)
Green217 (85.1%)
Blue157 (61.6%)
Hue156.47°
Saturation (HSL)66.81%
Lightness55.1%
Dominant channelGreen
Hex per channelR 40 · G D9 · B 9D

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Every value on this page was computed from “40d99d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.