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Recognised as Colour

#333B79

  • #333B79
  • Blue
  • Dark
  • Nearest: Dark slateblue

#333B79 is a blue with RGB values 51, 59, 121 and HSL 233°, 41%, 34%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#333B79#333B79
HEX#333B79
RGBrgb(51, 59, 121)
RGB (0–1)0.2, 0.2314, 0.4745
RGB percentages20%, 23.1%, 47.5%
HSLhsl(233.1, 40.7%, 33.7%)
HSV / HSBhsv(233.1, 57.9%, 47.5%)
CMYK57.9%, 51.2%, 0%, 52.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,357,561
CSS custom property--colour: #333B79;

Brightness & contrast

Relative luminance0.05212WCAG 2.x, 0 is black and 1 is white
Perceived brightness67 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.28:1
Contrast with white10.28:1WCAG normal text: AAA
Contrast with black2.04:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#CCC486

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1C447Bno red cones; affects about 1% of men; ΔE 9.9 from the original
Deuteranopia#123E78no green cones; the most common form, about 1% of men; ΔE 8.1 from the original
Tritanopia#0D4954no blue cones; rare, and affects men and women equally; ΔE 39.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.28:1WCAG large text: AAA
Contrast with black, large text2.04:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.6Midnight blue · ΔE 23.1Rebecca purple · ΔE 29Steel blue · ΔE 32.7Slate blue · ΔE 34Royal blue · ΔE 36.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.63, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#797133
Analogous#335E79, #4E3379
Triadic#79333B, #3B7933
Split complementary#794E33, #5E7933
Tetradic#79335E, #797133, #33794E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A1A7D7
Lighter +30%#7D85C8
Lighter +20%#5964B9
Lighter +10%#424C9D
Darker −10%#242A55
Darker −20%#151831
Darker −30%#06070D
Darker −40%#000000
More saturated +25%#1E2A8F
Less saturated −25%#494C64

Channel breakdown

R51
G59
B121
Red51 (20%)
Green59 (23.1%)
Blue121 (47.5%)
Hue233.14°
Saturation (HSL)40.7%
Lightness33.73%
Dominant channelBlue
Hex per channelR 33 · G 3B · B 79

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Every value on this page was computed from “333b79” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.