Nerdulator> put something in

Recognised as Colour

#A9D8FF

  • #A9D8FF
  • Blue
  • Light
  • Nearest: Light skyblue

#A9D8FF is a blue with RGB values 169, 216, 255 and HSL 207°, 100%, 83%. It is a light colour, so black text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#A9D8FF#A9D8FF
HEX#A9D8FF
RGBrgb(169, 216, 255)
RGB (0–1)0.6627, 0.8471, 1
RGB percentages66.3%, 84.7%, 100%
HSLhsl(207.2, 100%, 83.1%)
HSV / HSBhsv(207.2, 33.7%, 100%)
CMYK33.7%, 15.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,131,135
CSS custom property--colour: #A9D8FF;

Brightness & contrast

Relative luminance0.64767WCAG 2.x, 0 is black and 1 is white
Perceived brightness208.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 13.95:1
Contrast with white1.51:1WCAG normal text: Fail
Contrast with black13.95:1WCAG normal text: AAA
Greyscale equivalent#D1D1D1
Inverted#562700

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C8D8FFno red cones; affects about 1% of men; ΔE 9.6 from the original
Deuteranopia#BDCEFEno green cones; the most common form, about 1% of men; ΔE 10.9 from the original
Tritanopia#8DE1E5no blue cones; rare, and affects men and women equally; ΔE 23 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.51:1WCAG large text: Fail
Contrast with black, large text13.95:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 8Sky blue · ΔE 10.4Light steelblue · ΔE 11.6Light blue · ΔE 13.3Powder blue · ΔE 17.9Lavender · ΔE 18.9
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 8.02, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFD0A9
Analogous#A9FFFB, #A9ADFF
Triadic#FFA9D8, #D8FFA9
Split complementary#FFA9AD, #FFFBA9
Tetradic#FBA9FF, #FFD0A9, #ADFFA9

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#FFFFFF
Lighter +10%#DCEFFF
Darker −10%#76C1FF
Darker −20%#43AAFF
Darker −30%#1093FF
Darker −40%#0078DC
More saturated +25%#A9D8FF
Less saturated −25%#B4D7F4

Channel breakdown

R169
G216
B255
Red169 (66.3%)
Green216 (84.7%)
Blue255 (100%)
Hue207.21°
Saturation (HSL)100%
Lightness83.14%
Dominant channelBlue
Hex per channelR A9 · G D8 · B FF

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “a9d8ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.