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Colour

#648CDC

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

#648CDC is a blue with RGB values 100, 140, 220 and HSL 220°, 63%, 63%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#648CDC#648CDC
HEX#648CDC
RGBrgb(100, 140, 220)
RGB (0–1)0.3922, 0.549, 0.8627
RGB percentages39.2%, 54.9%, 86.3%
HSLhsl(220, 63.2%, 62.7%)
HSV / HSBhsv(220, 54.5%, 86.3%)
CMYK54.5%, 36.4%, 0%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,589,660
CSS custom property--colour: #648CDC;

Brightness & contrast

Relative luminance0.26633WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.33:1
Contrast with white3.32:1WCAG normal text: Fail
Contrast with black6.33:1WCAG normal text: AA
Greyscale equivalent#898989
Inverted#9B7323

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6C93DFno red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#5D88DAno green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#1C9EAAno blue cones; rare, and affects men and women equally; ΔE 47.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.32:1WCAG large text: AA
Contrast with black, large text6.33:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 5.4Dodgerblue · ΔE 18.3Steel blue · ΔE 19.5Medium purple · ΔE 28.3Royal blue · ΔE 28.6Deep skyblue · ΔE 30.4
Nearest named CSS colourCornflower blue (#6495ED)ΔE 5.36, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DCB464
Analogous#64C8DC, #7864DC
Triadic#DC648C, #8CDC64
Split complementary#DC7864, #C8DC64
Tetradic#DC64C8, #DCB464, #64DC78

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E1E9F8
Lighter +20%#B7CAEF
Lighter +10%#8EABE5
Darker −10%#3A6DD3
Darker −20%#2856B2
Darker −30%#1F4288
Darker −40%#152E5F
More saturated +25%#4C84F4
Less saturated −25%#7C94C4

Channel breakdown

R100
G140
B220
Red100 (39.2%)
Green140 (54.9%)
Blue220 (86.3%)
Hue220°
Saturation (HSL)63.16%
Lightness62.75%
Dominant channelBlue
Hex per channelR 64 · G 8C · B DC

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