Recognised as Colour
#3333B8
- #3333B8
- Blue
- Dark
- Nearest: Dark blue
#3333B8 is a blue with RGB values 51, 51, 184 and HSL 240°, 57%, 46%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#3333B8#3333B8
HEX#3333B8
RGBrgb(51, 51, 184)
RGB (0–1)0.2, 0.2, 0.7216
RGB percentages20%, 20%, 72.2%
HSLhsl(240, 56.6%, 46.1%)
HSV / HSBhsv(240, 72.3%, 72.2%)
CMYK72.3%, 72.3%, 0%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,355,576
CSS custom property--colour: #3333B8;
Brightness & contrast
Relative luminance0.06532WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.1:1
Contrast with white9.1:1WCAG normal text: AAA
Contrast with black2.31:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#CCCC47
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.1:1WCAG large text: AAA
Contrast with black, large text2.31:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#B8B833
Analogous#3376B8, #7633B8
Triadic#B83333, #33B833
Split complementary#B87633, #76B833
Tetradic#B83376, #B8B833, #33B876
Tints, shades & saturation
Channel breakdown
R51
G51
B184
Red51 (20%)
Green51 (20%)
Blue184 (72.2%)
Hue240°
Saturation (HSL)56.6%
Lightness46.08%
Dominant channelBlue
Hex per channelR 33 · G 33 · B B8
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