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Recognised as Colour

#648AD4

  • #648AD4
  • Blue
  • Dark
  • Nearest: Cornflower blue

#648AD4 is a blue with RGB values 100, 138, 212 and HSL 220°, 57%, 61%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#648AD4#648AD4
HEX#648AD4
RGBrgb(100, 138, 212)
RGB (0–1)0.3922, 0.5412, 0.8314
RGB percentages39.2%, 54.1%, 83.1%
HSLhsl(219.6, 56.6%, 61.2%)
HSV / HSBhsv(219.6, 52.8%, 83.1%)
CMYK52.8%, 34.9%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,589,140
CSS custom property--colour: #648AD4;

Brightness & contrast

Relative luminance0.2564WCAG 2.x, 0 is black and 1 is white
Perceived brightness138.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.13:1
Contrast with white3.43:1WCAG normal text: Fail
Contrast with black6.13:1WCAG normal text: AA
Greyscale equivalent#878787
Inverted#9B752B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6D90D7no red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#5F86D2no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#2A9AA5no blue cones; rare, and affects men and women equally; ΔE 44 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.43:1WCAG large text: AA
Contrast with black, large text6.13:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 8.5Steel blue · ΔE 16.4Dodgerblue · ΔE 21.5Deep skyblue · ΔE 29.5Medium purple · ΔE 30.1Royal blue · ΔE 31.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 8.5, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D4AE64
Analogous#64C2D4, #7664D4
Triadic#D4648A, #8AD464
Split complementary#D47664, #C2D464
Tetradic#D464C2, #D4AE64, #64D476

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DCE4F5
Lighter +20%#B4C6EA
Lighter +10%#8CA8DF
Darker −10%#3C6CC9
Darker −20%#2E56A4
Darker −30%#23417C
Darker −40%#172C55
More saturated +25%#4B82ED
Less saturated −25%#7D92BB

Channel breakdown

R100
G138
B212
Red100 (39.2%)
Green138 (54.1%)
Blue212 (83.1%)
Hue219.64°
Saturation (HSL)56.57%
Lightness61.18%
Dominant channelBlue
Hex per channelR 64 · G 8A · B D4

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Every value on this page was computed from “648ad4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.