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Recognised as Colour

#33339A

  • #33339A
  • Blue
  • Dark
  • Nearest: Midnight blue

#33339A is a blue with RGB values 51, 51, 154 and HSL 240°, 50%, 40%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#33339A#33339A
HEX#33339A
RGBrgb(51, 51, 154)
RGB (0–1)0.2, 0.2, 0.6039
RGB percentages20%, 20%, 60.4%
HSLhsl(240, 50.2%, 40.2%)
HSV / HSBhsv(240, 66.9%, 60.4%)
CMYK66.9%, 66.9%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,355,546
CSS custom property--colour: #33339A;

Brightness & contrast

Relative luminance0.05405WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.09:1
Contrast with white10.09:1WCAG normal text: AAA
Contrast with black2.08:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#CCCC65

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00469Dno red cones; affects about 1% of men; ΔE 17 from the original
Deuteranopia#003D98no green cones; the most common form, about 1% of men; ΔE 12.2 from the original
Tritanopia#004E62no blue cones; rare, and affects men and women equally; ΔE 60.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.09:1WCAG large text: AAA
Contrast with black, large text2.08:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 13.8Rebecca purple · ΔE 14Dark slateblue · ΔE 16.2Slate blue · ΔE 17.7Indigo · ΔE 19.8Navy · ΔE 22.1
Nearest named CSS colourMidnight blue (#191970)ΔE 13.82, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9A9A33
Analogous#33679A, #67339A
Triadic#9A3333, #339A33
Split complementary#9A6733, #679A33
Tetradic#9A3367, #9A9A33, #339A67

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B3B3E6
Lighter +30%#8D8DD9
Lighter +20%#6767CC
Lighter +10%#4040C0
Darker −10%#262674
Darker −20%#1A1A4D
Darker −30%#0D0D27
Darker −40%#000001
More saturated +25%#1919B4
Less saturated −25%#4D4D80

Channel breakdown

R51
G51
B154
Red51 (20%)
Green51 (20%)
Blue154 (60.4%)
Hue240°
Saturation (HSL)50.24%
Lightness40.2%
Dominant channelBlue
Hex per channelR 33 · G 33 · B 9A

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Every value on this page was computed from “33339a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.