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Colour

#66DDAA

  • #66DDAA
  • Cyan
  • Light
  • Nearest: Medium aquamarine

#66DDAA is a cyan with RGB values 102, 221, 170 and HSL 154°, 64%, 63%. It is a light colour, so black text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#66DDAA#66DDAA
HEX#66DDAA
HEX (short)#6DA
RGBrgb(102, 221, 170)
RGB (0–1)0.4, 0.8667, 0.6667
RGB percentages40%, 86.7%, 66.7%
HSLhsl(154.3, 63.6%, 63.3%)
HSV / HSBhsv(154.3, 53.8%, 86.7%)
CMYK53.8%, 0%, 23.1%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,741,418
CSS custom property--colour: #66DDAA;

Brightness & contrast

Relative luminance0.5744WCAG 2.x, 0 is black and 1 is white
Perceived brightness187.3 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#C0C0C0
Inverted#992255

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#DACFA7no red cones; affects about 1% of men; ΔE 43.4 from the original
Deuteranopia#C8C2ADno green cones; the most common form, about 1% of men; ΔE 44.1 from the original
Tritanopia#38DDCFno blue cones; rare, and affects men and women equally; ΔE 20.1 from the original
Distinguishable without hueYesnever 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

Medium aquamarine · ΔE 10.8Aquamarine · ΔE 12.8Medium seagreen · ΔE 18Turquoise · ΔE 19.1Light green · ΔE 22.8Dark seagreen · ΔE 23.3
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 10.83, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DD6699
Analogous#66DD6E, #66D5DD
Triadic#AA66DD, #DDAA66
Split complementary#DD66D5, #DD6E66
Tetradic#6E66DD, #DD6699, #D4DD66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E3F9F0
Lighter +20%#B9F0D8
Lighter +10%#90E6C1
Darker −10%#3CD493
Darker −20%#28B579
Darker −30%#1F8B5D
Darker −40%#166141
More saturated +25%#4FF4AD
Less saturated −25%#7DC6A7

Channel breakdown

R102
G221
B170
Red102 (40%)
Green221 (86.7%)
Blue170 (66.7%)
Hue154.29°
Saturation (HSL)63.64%
Lightness63.33%
Dominant channelGreen
Hex per channelR 66 · G DD · B AA

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Every value on this page was computed from “66ddaa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.