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Colour

#C9DEFF

  • #C9DEFF
  • Blue
  • Light
  • Nearest: Light steelblue

#C9DEFF is a blue with RGB values 201, 222, 255 and HSL 217°, 100%, 89%. It is a light colour, so black text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Light steelblue.

Colour values

#C9DEFF#C9DEFF
HEX#C9DEFF
RGBrgb(201, 222, 255)
RGB (0–1)0.7882, 0.8706, 1
RGB percentages78.8%, 87.1%, 100%
HSLhsl(216.7, 100%, 89.4%)
HSV / HSBhsv(216.7, 21.2%, 100%)
CMYK21.2%, 12.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,229,823
CSS custom property--colour: #C9DEFF;

Brightness & contrast

Relative luminance0.7188WCAG 2.x, 0 is black and 1 is white
Perceived brightness220.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 15.38:1
Contrast with white1.37:1WCAG normal text: Fail
Contrast with black15.38:1WCAG normal text: AAA
Greyscale equivalent#DCDCDC
Inverted#362100

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D3DFFFno red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#CEDAFEno green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#BBE5E9no blue cones; rare, and affects men and women equally; ΔE 17.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.37:1WCAG large text: Fail
Contrast with black, large text15.38:1WCAG large text: AAA

Named colours

Light steelblue · ΔE 10Lavender · ΔE 10.3Light blue · ΔE 13.4Light skyblue · ΔE 16.9Alice blue · ΔE 16.9Sky blue · ΔE 17.3
Nearest named CSS colourLight steelblue (#B0C4DE)ΔE 10.03, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFEAC9
Analogous#C9F9FF, #CFC9FF
Triadic#FFC9DE, #DEFFC9
Split complementary#FFCFC9, #F9FFC9
Tetradic#FFC9F9, #FFEAC9, #C9FFCF

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#FFFFFF
Lighter +10%#FCFDFF
Darker −10%#96BFFF
Darker −20%#63A0FF
Darker −30%#3081FF
Darker −40%#0062FC
More saturated +25%#C9DEFF
Less saturated −25%#D0E0F8

Channel breakdown

R201
G222
B255
Red201 (78.8%)
Green222 (87.1%)
Blue255 (100%)
Hue216.67°
Saturation (HSL)100%
Lightness89.41%
Dominant channelBlue
Hex per channelR C9 · G DE · B FF

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Every value on this page was computed from “c9deff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.