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Colour

#63A4E7

  • #63A4E7
  • Blue
  • Dark
  • Nearest: Cornflower blue

#63A4E7 is a blue with RGB values 99, 164, 231 and HSL 210°, 73%, 65%. It is a dark colour, so black text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#63A4E7#63A4E7
HEX#63A4E7
RGBrgb(99, 164, 231)
RGB (0–1)0.3882, 0.6431, 0.9059
RGB percentages38.8%, 64.3%, 90.6%
HSLhsl(210.5, 73.3%, 64.7%)
HSV / HSBhsv(210.5, 57.1%, 90.6%)
CMYK57.1%, 29%, 0%, 9.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,530,279
CSS custom property--colour: #63A4E7;

Brightness & contrast

Relative luminance0.34973WCAG 2.x, 0 is black and 1 is white
Perceived brightness157.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.99:1
Contrast with white2.63:1WCAG normal text: Fail
Contrast with black7.99:1WCAG normal text: AAA
Greyscale equivalent#9B9B9B
Inverted#9C5B18

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#88A7EAno red cones; affects about 1% of men; ΔE 8.7 from the original
Deuteranopia#779AE6no green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#00B4BCno blue cones; rare, and affects men and women equally; ΔE 41.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.63:1WCAG large text: Fail
Contrast with black, large text7.99:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 14.7Steel blue · ΔE 15.6Deep skyblue · ΔE 17.8Light skyblue · ΔE 20.4Sky blue · ΔE 26.7Dodgerblue · ΔE 26.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 14.7, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E7A663
Analogous#63E6E7, #6463E7
Triadic#E763A4, #A4E763
Split complementary#E76463, #E6E763
Tetradic#E763E6, #E7A663, #63E764

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E8F1FB
Lighter +20%#BBD8F5
Lighter +10%#8FBEEE
Darker −10%#378AE0
Darker −20%#1E71C6
Darker −30%#185899
Darker −40%#113E6D
More saturated +25%#4CA4FE
Less saturated −25%#79A4D1

Channel breakdown

R99
G164
B231
Red99 (38.8%)
Green164 (64.3%)
Blue231 (90.6%)
Hue210.45°
Saturation (HSL)73.33%
Lightness64.71%
Dominant channelBlue
Hex per channelR 63 · G A4 · B E7

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Every value on this page was computed from “63a4e7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.