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Recognised as Colour

#A3C1EB

  • #A3C1EB
  • Blue
  • Light
  • Nearest: Light steelblue

#A3C1EB is a blue with RGB values 163, 193, 235 and HSL 215°, 64%, 78%. It is a light colour, so black text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Light steelblue.

Colour values

#A3C1EB#A3C1EB
HEX#A3C1EB
RGBrgb(163, 193, 235)
RGB (0–1)0.6392, 0.7569, 0.9216
RGB percentages63.9%, 75.7%, 92.2%
HSLhsl(215, 64.3%, 78%)
HSV / HSBhsv(215, 30.6%, 92.2%)
CMYK30.6%, 17.9%, 0%, 7.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,732,011
CSS custom property--colour: #A3C1EB;

Brightness & contrast

Relative luminance0.51925WCAG 2.x, 0 is black and 1 is white
Perceived brightness190 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.38:1
Contrast with white1.84:1WCAG normal text: Fail
Contrast with black11.38:1WCAG normal text: AAA
Greyscale equivalent#BEBEBE
Inverted#5C3E14

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B2C3EDno red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#AABCEAno green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#8ECACFno blue cones; rare, and affects men and women equally; ΔE 23.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.84:1WCAG large text: Fail
Contrast with black, large text11.38:1WCAG large text: AAA

Named colours

Light steelblue · ΔE 9Light skyblue · ΔE 11.5Sky blue · ΔE 14.7Light blue · ΔE 17.6Thistle · ΔE 20.5Lavender · ΔE 21
Nearest named CSS colourLight steelblue (#B0C4DE)ΔE 9.04, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EBCDA3
Analogous#A3E5EB, #A9A3EB
Triadic#EBA3C1, #C1EBA3
Split complementary#EBA9A3, #E5EBA3
Tetradic#EBA3E5, #EBCDA3, #A3EBA9

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#F7F9FD
Lighter +10%#CDDDF4
Darker −10%#79A5E2
Darker −20%#4F89D9
Darker −30%#2C6DC9
Darker −40%#23579F
More saturated +25%#95BFF9
Less saturated −25%#B1C3DD

Channel breakdown

R163
G193
B235
Red163 (63.9%)
Green193 (75.7%)
Blue235 (92.2%)
Hue215°
Saturation (HSL)64.29%
Lightness78.04%
Dominant channelBlue
Hex per channelR A3 · G C1 · B EB

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Every value on this page was computed from “a3c1eb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.