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Recognised as Colour

#4080DD

  • #4080DD
  • Blue
  • Dark
  • Nearest: Cornflower blue

#4080DD is a blue with RGB values 64, 128, 221 and HSL 216°, 70%, 56%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#4080DD#4080DD
HEX#4080DD
RGBrgb(64, 128, 221)
RGB (0–1)0.251, 0.502, 0.8667
RGB percentages25.1%, 50.2%, 86.7%
HSLhsl(215.5, 69.8%, 55.9%)
HSV / HSBhsv(215.5, 71%, 86.7%)
CMYK71%, 42.1%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,227,293
CSS custom property--colour: #4080DD;

Brightness & contrast

Relative luminance0.21749WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.35:1
Contrast with white3.93:1WCAG normal text: Fail
Contrast with black5.35:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#BF7F22

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5388E1no red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#387ADBno green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#0096A4no blue cones; rare, and affects men and women equally; ΔE 53 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.93:1WCAG large text: AA
Contrast with black, large text5.35:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.2Dodgerblue · ΔE 11.4Royal blue · ΔE 20.7Steel blue · ΔE 25.7Medium purple · ΔE 26.7Slate blue · ΔE 27.4
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.23, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DD9D40
Analogous#40CEDD, #4F40DD
Triadic#DD4080, #80DD40
Split complementary#DD4F40, #CFDD40
Tetradic#DD40CE, #DD9D40, #40DD4F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EDF3FC
Lighter +30%#C2D6F4
Lighter +20%#97BAEC
Lighter +10%#6B9DE5
Darker −10%#2366C7
Darker −20%#1C509B
Darker −30%#143970
Darker −40%#0C2345
More saturated +25%#247BF9
Less saturated −25%#5C85C1

Channel breakdown

R64
G128
B221
Red64 (25.1%)
Green128 (50.2%)
Blue221 (86.7%)
Hue215.54°
Saturation (HSL)69.78%
Lightness55.88%
Dominant channelBlue
Hex per channelR 40 · G 80 · B DD

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Every value on this page was computed from “4080dd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.