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Recognised as Colour

#4021D7

  • #4021D7
  • Blue
  • Dark
  • Nearest: Medium blue

#4021D7 is a blue with RGB values 64, 33, 215 and HSL 250°, 73%, 49%. It is a dark colour, so white text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#4021D7#4021D7
HEX#4021D7
RGBrgb(64, 33, 215)
RGB (0–1)0.251, 0.1294, 0.8431
RGB percentages25.1%, 12.9%, 84.3%
HSLhsl(250.2, 73.4%, 48.6%)
HSV / HSBhsv(250.2, 84.7%, 84.3%)
CMYK70.2%, 84.7%, 0%, 15.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,202,967
CSS custom property--colour: #4021D7;

Brightness & contrast

Relative luminance0.07084WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.69:1
Contrast with white8.69:1WCAG normal text: AAA
Contrast with black2.42:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#BFDE28

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0052DCno red cones; affects about 1% of men; ΔE 31 from the original
Deuteranopia#0043D4no green cones; the most common form, about 1% of men; ΔE 23.2 from the original
Tritanopia#005D80no blue cones; rare, and affects men and women equally; ΔE 94 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.69:1WCAG large text: AAA
Contrast with black, large text2.42:1WCAG large text: Fail

Named colours

Medium blue · ΔE 10.2Blue violet · ΔE 16.4Dark violet · ΔE 21.7Dark blue · ΔE 27.1Blue · ΔE 27.7Dark orchid · ΔE 28
Nearest named CSS colourMedium blue (#0000CD)ΔE 10.18, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B8D721
Analogous#215DD7, #9B21D7
Triadic#D74021, #21D740
Split complementary#D79B21, #5DD721
Tetradic#D7215D, #B8D721, #21D79B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D4CDF7
Lighter +30%#AEA1F0
Lighter +20%#8874EA
Lighter +10%#6248E3
Darker −10%#331AAB
Darker −20%#26137F
Darker −30%#190D52
Darker −40%#0B0626
More saturated +25%#2C02F6
Less saturated −25%#5440B8

Channel breakdown

R64
G33
B215
Red64 (25.1%)
Green33 (12.9%)
Blue215 (84.3%)
Hue250.22°
Saturation (HSL)73.39%
Lightness48.63%
Dominant channelBlue
Hex per channelR 40 · G 21 · B D7

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Every value on this page was computed from “4021d7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.