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Recognised as Colour

#63B0E0

  • #63B0E0
  • Blue
  • Dark
  • Nearest: Light skyblue

#63B0E0 is a blue with RGB values 99, 176, 224 and HSL 203°, 67%, 63%. It is a dark colour, so black text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#63B0E0#63B0E0
HEX#63B0E0
RGBrgb(99, 176, 224)
RGB (0–1)0.3882, 0.6902, 0.8784
RGB percentages38.8%, 69%, 87.8%
HSLhsl(203, 66.8%, 63.3%)
HSV / HSBhsv(203, 55.8%, 87.8%)
CMYK55.8%, 21.4%, 0%, 12.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,533,344
CSS custom property--colour: #63B0E0;

Brightness & contrast

Relative luminance0.39085WCAG 2.x, 0 is black and 1 is white
Perceived brightness163.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.82:1
Contrast with white2.38:1WCAG normal text: Fail
Contrast with black8.82:1WCAG normal text: AAA
Greyscale equivalent#A3A3A3
Inverted#9C4F1F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#9AAFE2no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#89A2DFno green cones; the most common form, about 1% of men; ΔE 16.8 from the original
Tritanopia#00BCC0no blue cones; rare, and affects men and women equally; ΔE 32.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.38:1WCAG large text: Fail
Contrast with black, large text8.82:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 11.3Deep skyblue · ΔE 13.9Sky blue · ΔE 15.2Steel blue · ΔE 17.5Light steelblue · ΔE 20.8Light blue · ΔE 24.9
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 11.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E09363
Analogous#63E0D1, #6372E0
Triadic#E063B0, #B0E063
Split complementary#E06372, #E0D163
Tetradic#D163E0, #E09363, #72E063

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E3F1F9
Lighter +20%#B8DBF1
Lighter +10%#8EC6E8
Darker −10%#389AD8
Darker −20%#2580B8
Darker −30%#1C628E
Darker −40%#144563
More saturated +25%#4CB5F7
Less saturated −25%#7AABC9

Channel breakdown

R99
G176
B224
Red99 (38.8%)
Green176 (69%)
Blue224 (87.8%)
Hue203.04°
Saturation (HSL)66.84%
Lightness63.33%
Dominant channelBlue
Hex per channelR 63 · G B0 · B E0

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Every value on this page was computed from “63b0e0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.