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Recognised as Colour

#63BDFD

  • #63BDFD
  • Blue
  • Dark
  • Nearest: Deep skyblue

#63BDFD is a blue with RGB values 99, 189, 253 and HSL 205°, 97%, 69%. It is a dark colour, so black text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#63BDFD#63BDFD
HEX#63BDFD
RGBrgb(99, 189, 253)
RGB (0–1)0.3882, 0.7412, 0.9922
RGB percentages38.8%, 74.1%, 99.2%
HSLhsl(204.9, 97.5%, 69%)
HSV / HSBhsv(204.9, 60.9%, 99.2%)
CMYK60.9%, 25.3%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,536,701
CSS custom property--colour: #63BDFD;

Brightness & contrast

Relative luminance0.4614WCAG 2.x, 0 is black and 1 is white
Perceived brightness176.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.23:1
Contrast with white2.05:1WCAG normal text: Fail
Contrast with black10.23:1WCAG normal text: AAA
Greyscale equivalent#AEAEAE
Inverted#9C4202

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A0BDFFno red cones; affects about 1% of men; ΔE 15.1 from the original
Deuteranopia#8BAEFCno green cones; the most common form, about 1% of men; ΔE 16.8 from the original
Tritanopia#00CDD3no blue cones; rare, and affects men and women equally; ΔE 39.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.05:1WCAG large text: Fail
Contrast with black, large text10.23:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 9.8Light skyblue · ΔE 12.9Sky blue · ΔE 20.3Steel blue · ΔE 22.8Cornflower blue · ΔE 23.3Light steelblue · ΔE 25.9
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 9.8, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FDA363
Analogous#63FDF0, #6370FD
Triadic#FD63BD, #BDFD63
Split complementary#FD6370, #FDF063
Tetradic#F063FD, #FDA363, #70FD63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FAFDFF
Lighter +20%#C8E8FE
Lighter +10%#95D2FE
Darker −10%#31A8FC
Darker −20%#0392F7
Darker −30%#0374C4
Darker −40%#025692
More saturated +25%#61BDFF
Less saturated −25%#77BAE9

Channel breakdown

R99
G189
B253
Red99 (38.8%)
Green189 (74.1%)
Blue253 (99.2%)
Hue204.94°
Saturation (HSL)97.47%
Lightness69.02%
Dominant channelBlue
Hex per channelR 63 · G BD · B FD

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