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Recognised as Colour

#A9D8EF

  • #A9D8EF
  • Cyan
  • Light
  • Nearest: Light blue

#A9D8EF is a cyan with RGB values 169, 216, 239 and HSL 200°, 69%, 80%. It is a light colour, so black text on it reaches 13.8:1 contrast (AAA for normal text). The nearest named colour is Light blue.

Colour values

#A9D8EF#A9D8EF
HEX#A9D8EF
RGBrgb(169, 216, 239)
RGB (0–1)0.6627, 0.8471, 0.9373
RGB percentages66.3%, 84.7%, 93.7%
HSLhsl(199.7, 68.6%, 80%)
HSV / HSBhsv(199.7, 29.3%, 93.7%)
CMYK29.3%, 9.6%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,131,119
CSS custom property--colour: #A9D8EF;

Brightness & contrast

Relative luminance0.63779WCAG 2.x, 0 is black and 1 is white
Perceived brightness206 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 13.76:1
Contrast with white1.53:1WCAG normal text: Fail
Contrast with black13.76:1WCAG normal text: AAA
Greyscale equivalent#D0D0D0
Inverted#562710

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CCD6F0no red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#C2CEEFno green cones; the most common form, about 1% of men; ΔE 12.8 from the original
Tritanopia#93DFDFno blue cones; rare, and affects men and women equally; ΔE 16 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.53:1WCAG large text: Fail
Contrast with black, large text13.76:1WCAG large text: AAA

Named colours

Light blue · ΔE 4.8Sky blue · ΔE 8.4Powder blue · ΔE 9.5Light steelblue · ΔE 10.3Light skyblue · ΔE 13Pale turquoise · ΔE 15.1
Nearest named CSS colourLight blue (#ADD8E6)ΔE 4.83, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EFC0A9
Analogous#A9EFE3, #A9B5EF
Triadic#EFA9D8, #D8EFA9
Split complementary#EFA9B5, #EFE3A9
Tetradic#E3A9EF, #EFC0A9, #B5EFA9

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#FFFFFF
Lighter +10%#D4EBF7
Darker −10%#7EC4E7
Darker −20%#53B1DF
Darker −30%#289DD7
Darker −40%#207EAC
More saturated +25%#9CDCFC
Less saturated −25%#B6D4E2

Channel breakdown

R169
G216
B239
Red169 (66.3%)
Green216 (84.7%)
Blue239 (93.7%)
Hue199.71°
Saturation (HSL)68.63%
Lightness80%
Dominant channelBlue
Hex per channelR A9 · G D8 · B EF

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Every value on this page was computed from “a9d8ef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.