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Recognised as Colour

#ADDDFF

  • #ADDDFF
  • Blue
  • Light
  • Nearest: Sky blue

#ADDDFF is a blue with RGB values 173, 221, 255 and HSL 205°, 100%, 84%. It is a light colour, so black text on it reaches 14.6:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#ADDDFF#ADDDFF
HEX#ADDDFF
RGBrgb(173, 221, 255)
RGB (0–1)0.6784, 0.8667, 1
RGB percentages67.8%, 86.7%, 100%
HSLhsl(204.9, 100%, 83.9%)
HSV / HSBhsv(204.9, 32.2%, 100%)
CMYK32.2%, 13.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,394,559
CSS custom property--colour: #ADDDFF;

Brightness & contrast

Relative luminance0.67817WCAG 2.x, 0 is black and 1 is white
Perceived brightness212.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 14.56:1
Contrast with white1.44:1WCAG normal text: Fail
Contrast with black14.56:1WCAG normal text: AAA
Greyscale equivalent#D5D5D5
Inverted#522200

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CEDCFFno red cones; affects about 1% of men; ΔE 10.7 from the original
Deuteranopia#C3D3FEno green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#93E6E8no blue cones; rare, and affects men and women equally; ΔE 21.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.44:1WCAG large text: Fail
Contrast with black, large text14.56:1WCAG large text: AAA

Named colours

Sky blue · ΔE 9.8Light skyblue · ΔE 9.8Light blue · ΔE 10.8Light steelblue · ΔE 11.7Powder blue · ΔE 15Lavender · ΔE 17.5
Nearest named CSS colourSky blue (#87CEEB)ΔE 9.81, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFCFAD
Analogous#ADFFF8, #ADB4FF
Triadic#FFADDD, #DDFFAD
Split complementary#FFADB4, #FFF8AD
Tetradic#F8ADFF, #FFCFAD, #B4FFAD

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#FFFFFF
Lighter +10%#E0F2FF
Darker −10%#7AC8FF
Darker −20%#47B3FF
Darker −30%#149EFF
Darker −40%#0083E0
More saturated +25%#ADDDFF
Less saturated −25%#B7DBF5

Channel breakdown

R173
G221
B255
Red173 (67.8%)
Green221 (86.7%)
Blue255 (100%)
Hue204.88°
Saturation (HSL)100%
Lightness83.92%
Dominant channelBlue
Hex per channelR AD · G DD · B FF

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