Recognised as Colour

#280C55

#280C55
Violet
Dark
Nearest: Midnight blue

#280C55 is a violet with RGB values 40, 12, 85 and HSL 263°, 75%, 19%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#280C55#280C55

HEX#280C55

RGBrgb(40, 12, 85)

RGB (0–1)0.1569, 0.0471, 0.3333

RGB percentages15.7%, 4.7%, 33.3%

HSLhsl(263, 75.3%, 19%)

HSV / HSBhsv(263, 85.9%, 33.3%)

CMYK52.9%, 85.9%, 0%, 66.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,624,597

CSS custom property--colour: #280C55;

Brightness & contrast

Relative luminance0.0137WCAG 2.x, 0 is black and 1 is white

Perceived brightness37.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.48:1

Contrast with white16.48:1WCAG normal text: AAA

Contrast with black1.27:1WCAG normal text: Fail

Greyscale equivalent#171717

Inverted#D7F3AA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#002057no red cones; affects about 1% of men; ΔE 18 from the original

Deuteranopia#001E54no green cones; the most common form, about 1% of men; ΔE 17.8 from the original

Tritanopia#1A2131no blue cones; rare, and affects men and women equally; ΔE 40.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.48:1WCAG large text: AAA

Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 12 Dark slateblue · ΔE 20.3 Rebecca purple · ΔE 25.4 Indigo · ΔE 26.3 Navy · ΔE 30.7 Purple · ΔE 32.5

Nearest named CSS colourMidnight blue (#191970)ΔE 11.96, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#39550C

Analogous#0C1455, #4D0C55

Triadic#55280C, #0C5528

Split complementary#554C0C, #15550C

Tetradic#550C14, #39550C, #0C554D

Tints, shades & saturation

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

Lighter +40%#8448E5

Lighter +30%#671FDB

Lighter +20%#5219AE

Lighter +10%#3D1282

Darker −10%#130628

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#250061

Less saturated −25%#2B1849

Channel breakdown

R40

G12

B85

Red40 (15.7%)

Green12 (4.7%)

Blue85 (33.3%)

Hue263.01°

Saturation (HSL)75.26%

Lightness19.02%

Dominant channelBlue

Hex per channelR 28 · G 0C · B 55

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#280C55

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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