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Recognised as Colour

#3133CF

  • #3133CF
  • Blue
  • Dark
  • Nearest: Dark blue

#3133CF is a blue with RGB values 49, 51, 207 and HSL 239°, 62%, 50%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#3133CF#3133CF
HEX#3133CF
RGBrgb(49, 51, 207)
RGB (0–1)0.1922, 0.2, 0.8118
RGB percentages19.2%, 20%, 81.2%
HSLhsl(239.2, 62.2%, 50.2%)
HSV / HSBhsv(239.2, 76.3%, 81.2%)
CMYK76.3%, 75.4%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,224,527
CSS custom property--colour: #3133CF;

Brightness & contrast

Relative luminance0.07526WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.38:1
Contrast with white8.38:1WCAG normal text: AAA
Contrast with black2.51:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#CECC30

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0055D3no red cones; affects about 1% of men; ΔE 24.7 from the original
Deuteranopia#0046CCno green cones; the most common form, about 1% of men; ΔE 16.1 from the original
Tritanopia#00617Fno blue cones; rare, and affects men and women equally; ΔE 84.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.38:1WCAG large text: AAA
Contrast with black, large text2.51:1WCAG large text: Fail

Named colours

Dark blue · ΔE 21.1Blue violet · ΔE 21.3Medium blue · ΔE 21.7Navy · ΔE 25Medium slateblue · ΔE 25.7Dark orchid · ΔE 26
Nearest named CSS colourDark blue (#00008B)ΔE 21.1, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CFCD31
Analogous#3182CF, #7E31CF
Triadic#CF3133, #33CF31
Split complementary#CF7E31, #82CF31
Tetradic#CF3182, #CFCD31, #31CF7E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6D7F6
Lighter +30%#ADAEEC
Lighter +20%#8485E2
Lighter +10%#5A5CD9
Darker −10%#2728A6
Darker −20%#1D1E7D
Darker −30%#131454
Darker −40%#0A0A2A
More saturated +25%#1114EF
Less saturated −25%#5152AF

Channel breakdown

R49
G51
B207
Red49 (19.2%)
Green51 (20%)
Blue207 (81.2%)
Hue239.24°
Saturation (HSL)62.2%
Lightness50.2%
Dominant channelBlue
Hex per channelR 31 · G 33 · B CF

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