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Recognised as Colour

#A4DDFA

  • #A4DDFA
  • Blue
  • Light
  • Nearest: Sky blue

#A4DDFA is a blue with RGB values 164, 221, 250 and HSL 200°, 90%, 81%. It is a light colour, so black text on it reaches 14.3:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#A4DDFA#A4DDFA
HEX#A4DDFA
RGBrgb(164, 221, 250)
RGB (0–1)0.6431, 0.8667, 0.9804
RGB percentages64.3%, 86.7%, 98%
HSLhsl(200.2, 89.6%, 81.2%)
HSV / HSBhsv(200.2, 34.4%, 98%)
CMYK34.4%, 11.6%, 0%, 2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,804,730
CSS custom property--colour: #A4DDFA;

Brightness & contrast

Relative luminance0.66508WCAG 2.x, 0 is black and 1 is white
Perceived brightness209.4 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 14.3:1
Contrast with white1.47:1WCAG normal text: Fail
Contrast with black14.3:1WCAG normal text: AAA
Greyscale equivalent#D3D3D3
Inverted#5B2205

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CFDBFCno red cones; affects about 1% of men; ΔE 14.3 from the original
Deuteranopia#C2D1FAno green cones; the most common form, about 1% of men; ΔE 15 from the original
Tritanopia#86E5E6no blue cones; rare, and affects men and women equally; ΔE 19.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.47:1WCAG large text: Fail
Contrast with black, large text14.3:1WCAG large text: AAA

Named colours

Sky blue · ΔE 7.1Light blue · ΔE 8.6Light skyblue · ΔE 10.2Powder blue · ΔE 12.3Light steelblue · ΔE 13Pale turquoise · ΔE 16.6
Nearest named CSS colourSky blue (#87CEEB)ΔE 7.12, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FAC1A4
Analogous#A4FAEC, #A4B2FA
Triadic#FAA4DD, #DDFAA4
Split complementary#FAA4B2, #FAECA4
Tetradic#ECA4FA, #FAC1A4, #B2FAA4

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#FFFFFF
Lighter +10%#D4EFFD
Darker −10%#74CBF7
Darker −20%#43B9F5
Darker −30%#13A7F2
Darker −40%#0B88C7
More saturated +25%#9FDFFF
Less saturated −25%#B0D9EE

Channel breakdown

R164
G221
B250
Red164 (64.3%)
Green221 (86.7%)
Blue250 (98%)
Hue200.23°
Saturation (HSL)89.58%
Lightness81.18%
Dominant channelBlue
Hex per channelR A4 · G DD · B FA

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Every value on this page was computed from “a4ddfa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.