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Recognised as Colour

#3133FF

  • #3133FF
  • Blue
  • Dark
  • Nearest: Medium blue

#3133FF is a blue with RGB values 49, 51, 255 and HSL 239°, 100%, 60%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#3133FF#3133FF
HEX#3133FF
RGBrgb(49, 51, 255)
RGB (0–1)0.1922, 0.2, 1
RGB percentages19.2%, 20%, 100%
HSLhsl(239.4, 100%, 59.6%)
HSV / HSBhsv(239.4, 80.8%, 100%)
CMYK80.8%, 80%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,224,575
CSS custom property--colour: #3133FF;

Brightness & contrast

Relative luminance0.10241WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.89:1
Contrast with white6.89:1WCAG normal text: AA
Contrast with black3.05:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#CECC00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0064FFno red cones; affects about 1% of men; ΔE 34.3 from the original
Deuteranopia#004FFCno green cones; the most common form, about 1% of men; ΔE 19.7 from the original
Tritanopia#00749Bno blue cones; rare, and affects men and women equally; ΔE 105.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.89:1WCAG large text: AAA
Contrast with black, large text3.05:1WCAG large text: AA

Named colours

Medium blue · ΔE 14.8Blue · ΔE 17.6Blue violet · ΔE 23.8Dark violet · ΔE 29.4Dark orchid · ΔE 38.1Dark blue · ΔE 40.6
Nearest named CSS colourMedium blue (#0000CD)ΔE 14.8, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFFD31
Analogous#319AFF, #9631FF
Triadic#FF3133, #33FF31
Split complementary#FF9631, #9AFF31
Tetradic#FF319A, #FFFD31, #31FF96

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FDFDFF
Lighter +30%#CACBFF
Lighter +20%#9798FF
Lighter +10%#6466FF
Darker −10%#0002FD
Darker −20%#0002CA
Darker −30%#000197
Darker −40%#000164
More saturated +25%#3133FF
Less saturated −25%#4B4CE5

Channel breakdown

R49
G51
B255
Red49 (19.2%)
Green51 (20%)
Blue255 (100%)
Hue239.42°
Saturation (HSL)100%
Lightness59.61%
Dominant channelBlue
Hex per channelR 31 · G 33 · B FF

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Every value on this page was computed from “3133ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.