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Recognised as Colour

#3F83EB

  • #3F83EB
  • Blue
  • Dark
  • Nearest: Dodgerblue

#3F83EB is a blue with RGB values 63, 131, 235 and HSL 216°, 81%, 58%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#3F83EB#3F83EB
HEX#3F83EB
RGBrgb(63, 131, 235)
RGB (0–1)0.2471, 0.5137, 0.9216
RGB percentages24.7%, 51.4%, 92.2%
HSLhsl(216.3, 81.1%, 58.4%)
HSV / HSBhsv(216.3, 73.2%, 92.2%)
CMYK73.2%, 44.3%, 0%, 7.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,162,539
CSS custom property--colour: #3F83EB;

Brightness & contrast

Relative luminance0.23288WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.66:1
Contrast with white3.71:1WCAG normal text: Fail
Contrast with black5.66:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#C07C14

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4E8DEFno red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#2B7DE9no green cones; the most common form, about 1% of men; ΔE 3.7 from the original
Tritanopia#009BABno blue cones; rare, and affects men and women equally; ΔE 58.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.71:1WCAG large text: AA
Contrast with black, large text5.66:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 7.1Cornflower blue · ΔE 12.2Royal blue · ΔE 16.3Slate blue · ΔE 24.8Medium purple · ΔE 24.9Medium slateblue · ΔE 28.6
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 7.05, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EBA73F
Analogous#3FD9EB, #513FEB
Triadic#EB3F83, #83EB3F
Split complementary#EB513F, #D9EB3F
Tetradic#EB3FD9, #EBA73F, #3FEB51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F8FAFE
Lighter +30%#CADCF9
Lighter +20%#9BBFF5
Lighter +10%#6DA1F0
Darker −10%#1767E0
Darker −20%#1251B2
Darker −30%#0E3C83
Darker −40%#092755
More saturated +25%#2B7FFF
Less saturated −25%#5989D1

Channel breakdown

R63
G131
B235
Red63 (24.7%)
Green131 (51.4%)
Blue235 (92.2%)
Hue216.28°
Saturation (HSL)81.13%
Lightness58.43%
Dominant channelBlue
Hex per channelR 3F · G 83 · B EB

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Every value on this page was computed from “3f83eb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.