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Colour

#63ACFF

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

#63ACFF is a blue with RGB values 99, 172, 255 and HSL 212°, 100%, 69%. It is a dark colour, so black text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#63ACFF#63ACFF
HEX#63ACFF
RGBrgb(99, 172, 255)
RGB (0–1)0.3882, 0.6745, 1
RGB percentages38.8%, 67.5%, 100%
HSLhsl(211.9, 100%, 69.4%)
HSV / HSBhsv(211.9, 61.2%, 100%)
CMYK61.2%, 32.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,532,351
CSS custom property--colour: #63ACFF;

Brightness & contrast

Relative luminance0.39378WCAG 2.x, 0 is black and 1 is white
Perceived brightness166.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.88:1
Contrast with white2.37:1WCAG normal text: Fail
Contrast with black8.88:1WCAG normal text: AAA
Greyscale equivalent#A2A2A2
Inverted#9C5300

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#89B1FFno red cones; affects about 1% of men; ΔE 7.9 from the original
Deuteranopia#73A2FDno green cones; the most common form, about 1% of men; ΔE 8.7 from the original
Tritanopia#00BFCAno blue cones; rare, and affects men and women equally; ΔE 48.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.37:1WCAG large text: Fail
Contrast with black, large text8.88:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.5Dodgerblue · ΔE 20Deep skyblue · ΔE 20.4Steel blue · ΔE 23.6Light skyblue · ΔE 25.5Sky blue · ΔE 33
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.52, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFB663
Analogous#63FAFF, #6863FF
Triadic#FF63AC, #ACFF63
Split complementary#FF6863, #FAFF63
Tetradic#FF63FA, #FFB663, #63FF68

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FCFDFF
Lighter +20%#C9E2FF
Lighter +10%#96C7FF
Darker −10%#3091FF
Darker −20%#0076FC
Darker −30%#005EC9
Darker −40%#004696
More saturated +25%#63ACFF
Less saturated −25%#76ADEC

Channel breakdown

R99
G172
B255
Red99 (38.8%)
Green172 (67.5%)
Blue255 (100%)
Hue211.92°
Saturation (HSL)100%
Lightness69.41%
Dominant channelBlue
Hex per channelR 63 · G AC · B FF

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