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Recognised as Colour

#63B7D5

  • #63B7D5
  • Cyan
  • Dark
  • Nearest: Sky blue

#63B7D5 is a cyan with RGB values 99, 183, 213 and HSL 196°, 58%, 61%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#63B7D5#63B7D5
HEX#63B7D5
RGBrgb(99, 183, 213)
RGB (0–1)0.3882, 0.7176, 0.8353
RGB percentages38.8%, 71.8%, 83.5%
HSLhsl(195.8, 57.6%, 61.2%)
HSV / HSBhsv(195.8, 53.5%, 83.5%)
CMYK53.5%, 14.1%, 0%, 16.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,535,125
CSS custom property--colour: #63B7D5;

Brightness & contrast

Relative luminance0.41324WCAG 2.x, 0 is black and 1 is white
Perceived brightness166.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.26:1
Contrast with white2.27:1WCAG normal text: Fail
Contrast with black9.26:1WCAG normal text: AAA
Greyscale equivalent#A7A7A7
Inverted#9C482A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A6B3D7no red cones; affects about 1% of men; ΔE 20.9 from the original
Deuteranopia#95A7D5no green cones; the most common form, about 1% of men; ΔE 21.7 from the original
Tritanopia#04C0C0no blue cones; rare, and affects men and women equally; ΔE 24.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.27:1WCAG large text: Fail
Contrast with black, large text9.26:1WCAG large text: AAA

Named colours

Sky blue · ΔE 9.3Light skyblue · ΔE 12.6Cadetblue · ΔE 18.2Light blue · ΔE 18.7Light steelblue · ΔE 19.4Deep skyblue · ΔE 19.7
Nearest named CSS colourSky blue (#87CEEB)ΔE 9.26, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D58163
Analogous#63D5BA, #637ED5
Triadic#D563B7, #B7D563
Split complementary#D5637E, #D5BA63
Tetradic#BA63D5, #D58163, #7ED563

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DCEFF5
Lighter +20%#B3DCEB
Lighter +10%#8BCAE0
Darker −10%#3BA4CA
Darker −20%#2D86A5
Darker −30%#22657D
Darker −40%#174555
More saturated +25%#4AC3EE
Less saturated −25%#7CABBC

Channel breakdown

R99
G183
B213
Red99 (38.8%)
Green183 (71.8%)
Blue213 (83.5%)
Hue195.79°
Saturation (HSL)57.58%
Lightness61.18%
Dominant channelBlue
Hex per channelR 63 · G B7 · B D5

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Every value on this page was computed from “63b7d5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.