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Colour

#0033CC

  • #0033CC
  • Blue
  • Dark
  • Nearest: Dark blue

#0033CC is a blue with RGB values 0, 51, 204 and HSL 225°, 100%, 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 blue.

Colour values

#0033CC#0033CC
HEX#0033CC
HEX (short)#03C
RGBrgb(0, 51, 204)
RGB (0–1)0, 0.2, 0.8
RGB percentages0%, 20%, 80%
HSLhsl(225, 100%, 40%)
HSV / HSBhsv(225, 100%, 80%)
CMYK100%, 75%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,260
CSS custom property--colour: #0033CC;

Brightness & contrast

Relative luminance0.06727WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.95:1
Contrast with white8.95:1WCAG normal text: AAA
Contrast with black2.35:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#FFCC33

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053D0no red cones; affects about 1% of men; ΔE 23 from the original
Deuteranopia#0040C9no green cones; the most common form, about 1% of men; ΔE 11.1 from the original
Tritanopia#00617Dno blue cones; rare, and affects men and women equally; ΔE 84.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.95:1WCAG large text: AAA
Contrast with black, large text2.35:1WCAG large text: Fail

Named colours

Dark blue · ΔE 20.4Medium blue · ΔE 22.9Navy · ΔE 24.2Blue violet · ΔE 25.1Medium slateblue · ΔE 26.8Dark orchid · ΔE 29.3
Nearest named CSS colourDark blue (#00008B)ΔE 20.42, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CC9900
Analogous#0099CC, #3300CC
Triadic#CC0033, #33CC00
Split complementary#CC3300, #99CC00
Tetradic#CC0099, #CC9900, #00CC33

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#99B3FF
Lighter +30%#668CFF
Lighter +20%#3366FF
Lighter +10%#0040FF
Darker −10%#002699
Darker −20%#001A66
Darker −30%#000D33
Darker −40%#000000
More saturated +25%#0033CC
Less saturated −25%#1940B3

Channel breakdown

R0
G51
B204
Red0 (0%)
Green51 (20%)
Blue204 (80%)
Hue225°
Saturation (HSL)100%
Lightness40%
Dominant channelBlue
Hex per channelR 00 · G 33 · B CC

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Every value on this page was computed from “0033cc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.