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Colour

#3333A7

  • #3333A7
  • Blue
  • Dark
  • Nearest: Rebecca purple

#3333A7 is a blue with RGB values 51, 51, 167 and HSL 240°, 53%, 43%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#3333A7#3333A7
HEX#3333A7
RGBrgb(51, 51, 167)
RGB (0–1)0.2, 0.2, 0.6549
RGB percentages20%, 20%, 65.5%
HSLhsl(240, 53.2%, 42.7%)
HSV / HSBhsv(240, 69.5%, 65.5%)
CMYK69.5%, 69.5%, 0%, 34.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,355,559
CSS custom property--colour: #3333A7;

Brightness & contrast

Relative luminance0.05861WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.67:1
Contrast with white9.67:1WCAG normal text: AAA
Contrast with black2.17:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#CCCC58

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004AABno red cones; affects about 1% of men; ΔE 18.8 from the original
Deuteranopia#003FA5no green cones; the most common form, about 1% of men; ΔE 12.8 from the original
Tritanopia#005269no blue cones; rare, and affects men and women equally; ΔE 66.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.67:1WCAG large text: AAA
Contrast with black, large text2.17:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 16.2Slate blue · ΔE 17Indigo · ΔE 18.4Navy · ΔE 18.9Midnight blue · ΔE 19.3Dark blue · ΔE 20.1
Nearest named CSS colourRebecca purple (#663399)ΔE 16.2, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A7A733
Analogous#336DA7, #6D33A7
Triadic#A73333, #33A733
Split complementary#A76D33, #6DA733
Tetradic#A7336D, #A7A733, #33A76D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCBCEA
Lighter +30%#9595DE
Lighter +20%#6D6DD3
Lighter +10%#4646C7
Darker −10%#272780
Darker −20%#1B1B59
Darker −30%#0F0F32
Darker −40%#03030B
More saturated +25%#1818C2
Less saturated −25%#4E4E8C

Channel breakdown

R51
G51
B167
Red51 (20%)
Green51 (20%)
Blue167 (65.5%)
Hue240°
Saturation (HSL)53.21%
Lightness42.75%
Dominant channelBlue
Hex per channelR 33 · G 33 · B A7

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Every value on this page was computed from “3333a7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.