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Colour

#33409A

  • #33409A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#33409A is a blue with RGB values 51, 64, 154 and HSL 232°, 50%, 40%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#33409A#33409A
HEX#33409A
RGBrgb(51, 64, 154)
RGB (0–1)0.2, 0.251, 0.6039
RGB percentages20%, 25.1%, 60.4%
HSLhsl(232.4, 50.2%, 40.2%)
HSV / HSBhsv(232.4, 66.9%, 60.4%)
CMYK66.9%, 58.4%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,358,874
CSS custom property--colour: #33409A;

Brightness & contrast

Relative luminance0.06704WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.97:1
Contrast with white8.97:1WCAG normal text: AAA
Contrast with black2.34:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#CCBF65

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004E9Dno red cones; affects about 1% of men; ΔE 13.6 from the original
Deuteranopia#004598no green cones; the most common form, about 1% of men; ΔE 9.1 from the original
Tritanopia#005666no blue cones; rare, and affects men and women equally; ΔE 54.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.97:1WCAG large text: AAA
Contrast with black, large text2.34:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 8.9Midnight blue · ΔE 16.7Rebecca purple · ΔE 18.3Slate blue · ΔE 19.3Royal blue · ΔE 22.1Medium purple · ΔE 26.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 8.85, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9A8D33
Analogous#33739A, #59339A
Triadic#9A3340, #409A33
Split complementary#9A5A33, #749A33
Tetradic#9A3374, #9A8D33, #339A5A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B3BAE6
Lighter +30%#8D96D9
Lighter +20%#6773CC
Lighter +10%#4050C0
Darker −10%#263074
Darker −20%#1A204D
Darker −30%#0D1027
Darker −40%#000001
More saturated +25%#192DB4
Less saturated −25%#4D5380

Channel breakdown

R51
G64
B154
Red51 (20%)
Green64 (25.1%)
Blue154 (60.4%)
Hue232.43°
Saturation (HSL)50.24%
Lightness40.2%
Dominant channelBlue
Hex per channelR 33 · G 40 · B 9A

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Every value on this page was computed from “33409a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.