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Recognised as Colour

#648BD6

  • #648BD6
  • Blue
  • Dark
  • Nearest: Cornflower blue

#648BD6 is a blue with RGB values 100, 139, 214 and HSL 219°, 58%, 62%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#648BD6#648BD6
HEX#648BD6
RGBrgb(100, 139, 214)
RGB (0–1)0.3922, 0.5451, 0.8392
RGB percentages39.2%, 54.5%, 83.9%
HSLhsl(219.5, 58.2%, 61.6%)
HSV / HSBhsv(219.5, 53.3%, 83.9%)
CMYK53.3%, 35%, 0%, 16.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,589,398
CSS custom property--colour: #648BD6;

Brightness & contrast

Relative luminance0.2603WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.21:1
Contrast with white3.38:1WCAG normal text: Fail
Contrast with black6.21:1WCAG normal text: AA
Greyscale equivalent#888888
Inverted#9B7429

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6D91D9no red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#6087D4no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#279BA6no blue cones; rare, and affects men and women equally; ΔE 44.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.38:1WCAG large text: AA
Contrast with black, large text6.21:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 7.9Steel blue · ΔE 16.8Dodgerblue · ΔE 20.9Deep skyblue · ΔE 29.4Medium purple · ΔE 30Royal blue · ΔE 30.9
Nearest named CSS colourCornflower blue (#6495ED)ΔE 7.86, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D6AF64
Analogous#64C4D6, #7664D6
Triadic#D6648B, #8BD664
Split complementary#D67664, #C4D664
Tetradic#D664C4, #D6AF64, #64D676

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DDE6F6
Lighter +20%#B5C7EB
Lighter +10%#8CA9E1
Darker −10%#3C6DCB
Darker −20%#2C57A8
Darker −30%#22427F
Darker −40%#172D57
More saturated +25%#4C83EF
Less saturated −25%#7D93BE

Channel breakdown

R100
G139
B214
Red100 (39.2%)
Green139 (54.5%)
Blue214 (83.9%)
Hue219.47°
Saturation (HSL)58.16%
Lightness61.57%
Dominant channelBlue
Hex per channelR 64 · G 8B · B D6

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Every value on this page was computed from “648bd6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.