Recognised as Colour
#4028BB
- #4028BB
- Blue
- Dark
- Nearest: Dark blue
#4028BB is a blue with RGB values 64, 40, 187 and HSL 250°, 65%, 45%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#4028BB#4028BB
HEX#4028BB
RGBrgb(64, 40, 187)
RGB (0–1)0.251, 0.1569, 0.7333
RGB percentages25.1%, 15.7%, 73.3%
HSLhsl(249.8, 64.8%, 44.5%)
HSV / HSBhsv(249.8, 78.6%, 73.3%)
CMYK65.8%, 78.6%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,204,731
CSS custom property--colour: #4028BB;
Brightness & contrast
Relative luminance0.06195WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.38:1
Contrast with white9.38:1WCAG normal text: AAA
Contrast with black2.24:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#BFD744
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.38:1WCAG large text: AAA
Contrast with black, large text2.24:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#A3BB28
Analogous#2859BB, #8A28BB
Triadic#BB4028, #28BB40
Split complementary#BB8A28, #59BB28
Tetradic#BB2859, #A3BB28, #28BB8A
Tints, shades & saturation
Channel breakdown
R64
G40
B187
Red64 (25.1%)
Green40 (15.7%)
Blue187 (73.3%)
Hue249.8°
Saturation (HSL)64.76%
Lightness44.51%
Dominant channelBlue
Hex per channelR 40 · G 28 · B BB
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