Colour

#28224A

#28224A
Blue
Dark
Nearest: Dark slateblue

#28224A is a blue with RGB values 40, 34, 74 and HSL 249°, 37%, 21%. It is a dark colour, so white text on it reaches 14.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#28224A#28224A

HEX#28224A

RGBrgb(40, 34, 74)

RGB (0–1)0.1569, 0.1333, 0.2902

RGB percentages15.7%, 13.3%, 29%

HSLhsl(249, 37%, 21.2%)

HSV / HSBhsv(249, 54.1%, 29%)

CMYK45.9%, 54.1%, 0%, 71%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,630,218

CSS custom property--colour: #28224A;

Brightness & contrast

Relative luminance0.0209WCAG 2.x, 0 is black and 1 is white

Perceived brightness42.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.81:1

Contrast with white14.81:1WCAG normal text: AAA

Contrast with black1.42:1WCAG normal text: Fail

Greyscale equivalent#262626

Inverted#D7DDB5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#12294Bno red cones; affects about 1% of men; ΔE 10.2 from the original

Deuteranopia#122749no green cones; the most common form, about 1% of men; ΔE 9.6 from the original

Tritanopia#1E2A32no blue cones; rare, and affects men and women equally; ΔE 24.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text14.81:1WCAG large text: AAA

Contrast with black, large text1.42:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 26.1 Midnight blue · ΔE 30.8 Black · ΔE 32.3 Dark slate grey · ΔE 36.5 Dim grey · ΔE 40 Rebecca purple · ΔE 40.3

Nearest named CSS colourDark slateblue (#483D8B)ΔE 26.08, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#444A22

Analogous#22304A, #3C224A

Triadic#4A2822, #224A28

Split complementary#4A3C22, #304A22

Tetradic#4A2230, #444A22, #224A3C

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#8277C1

Lighter +30%#6254B1

Lighter +20%#4E4290

Lighter +10%#3B326D

Darker −10%#151227

Darker −20%#020204

Darker −30%#000000

Darker −40%#000000

More saturated +25%#1F1558

Less saturated −25%#31303D

Channel breakdown

R40

G34

B74

Red40 (15.7%)

Green34 (13.3%)

Blue74 (29%)

Hue249°

Saturation (HSL)37.04%

Lightness21.18%

Dominant channelBlue

Hex per channelR 28 · G 22 · B 4A

Keep nerding

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#28224A

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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