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Colour

#3F33FF

  • #3F33FF
  • Blue
  • Dark
  • Nearest: Medium blue

#3F33FF is a blue with RGB values 63, 51, 255 and HSL 244°, 100%, 60%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#3F33FF#3F33FF
HEX#3F33FF
RGBrgb(63, 51, 255)
RGB (0–1)0.2471, 0.2, 1
RGB percentages24.7%, 20%, 100%
HSLhsl(243.5, 100%, 60%)
HSV / HSBhsv(243.5, 80%, 100%)
CMYK75.3%, 80%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,142,079
CSS custom property--colour: #3F33FF;

Brightness & contrast

Relative luminance0.10644WCAG 2.x, 0 is black and 1 is white
Perceived brightness100.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.71:1
Contrast with white6.71:1WCAG normal text: AA
Contrast with black3.13:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#C0CC00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0065FFno red cones; affects about 1% of men; ΔE 35.1 from the original
Deuteranopia#0052FCno green cones; the most common form, about 1% of men; ΔE 22 from the original
Tritanopia#00749Bno blue cones; rare, and affects men and women equally; ΔE 104.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.71:1WCAG large text: AAA
Contrast with black, large text3.13:1WCAG large text: AA

Named colours

Medium blue · ΔE 14.9Blue · ΔE 18.1Blue violet · ΔE 22.4Dark violet · ΔE 28Dark orchid · ΔE 36.9Dark blue · ΔE 40.4
Nearest named CSS colourMedium blue (#0000CD)ΔE 14.94, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F3FF33
Analogous#338DFF, #A533FF
Triadic#FF3F33, #33FF3F
Split complementary#FFA533, #8DFF33
Tetradic#FF338D, #F3FF33, #33FFA5

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#CFCCFF
Lighter +20%#9F99FF
Lighter +10%#6F66FF
Darker −10%#0F00FF
Darker −20%#0C00CC
Darker −30%#090099
Darker −40%#060066
More saturated +25%#3F33FF
Less saturated −25%#554CE6

Channel breakdown

R63
G51
B255
Red63 (24.7%)
Green51 (20%)
Blue255 (100%)
Hue243.53°
Saturation (HSL)100%
Lightness60%
Dominant channelBlue
Hex per channelR 3F · G 33 · B FF

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Every value on this page was computed from “3f33ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.