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Recognised as Colour

#63D4E6

  • #63D4E6
  • Cyan
  • Light
  • Nearest: Sky blue

#63D4E6 is a cyan with RGB values 99, 212, 230 and HSL 188°, 72%, 65%. It is a light colour, so black text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#63D4E6#63D4E6
HEX#63D4E6
RGBrgb(99, 212, 230)
RGB (0–1)0.3882, 0.8314, 0.902
RGB percentages38.8%, 83.1%, 90.2%
HSLhsl(188.2, 72.4%, 64.5%)
HSV / HSBhsv(188.2, 57%, 90.2%)
CMYK57%, 7.8%, 0%, 9.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,542,566
CSS custom property--colour: #63D4E6;

Brightness & contrast

Relative luminance0.55453WCAG 2.x, 0 is black and 1 is white
Perceived brightness188 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.09:1
Contrast with white1.74:1WCAG normal text: Fail
Contrast with black12.09:1WCAG normal text: AAA
Greyscale equivalent#BDBDBD
Inverted#9C2B19

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C4CDE7no red cones; affects about 1% of men; ΔE 29.7 from the original
Deuteranopia#B0BEE6no green cones; the most common form, about 1% of men; ΔE 31 from the original
Tritanopia#00DDD9no blue cones; rare, and affects men and women equally; ΔE 19 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.74:1WCAG large text: Fail
Contrast with black, large text12.09:1WCAG large text: AAA

Named colours

Sky blue · ΔE 12.5Dark turquoise · ΔE 14.5Medium turquoise · ΔE 14.7Pale turquoise · ΔE 17.9Powder blue · ΔE 18.1Light blue · ΔE 18.2
Nearest named CSS colourSky blue (#87CEEB)ΔE 12.49, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E67563
Analogous#63E6B6, #6393E6
Triadic#E663D4, #D4E663
Split complementary#E66393, #E6B663
Tetradic#B763E6, #E67563, #93E663

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E7F8FB
Lighter +20%#BBECF4
Lighter +10%#8FE0ED
Darker −10%#37C8DF
Darker −20%#1FADC4
Darker −30%#188698
Darker −40%#115F6C
More saturated +25%#4CE4FD
Less saturated −25%#7AC4CF

Channel breakdown

R99
G212
B230
Red99 (38.8%)
Green212 (83.1%)
Blue230 (90.2%)
Hue188.24°
Saturation (HSL)72.38%
Lightness64.51%
Dominant channelBlue
Hex per channelR 63 · G D4 · B E6

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Every value on this page was computed from “63d4e6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.