Recognised as Colour

#280A39

#280A39
Violet
Dark
Nearest: Midnight blue

#280A39 is a violet with RGB values 40, 10, 57 and HSL 278°, 70%, 13%. It is a dark colour, so white text on it reaches 17.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#280A39#280A39

HEX#280A39

RGBrgb(40, 10, 57)

RGB (0–1)0.1569, 0.0392, 0.2235

RGB percentages15.7%, 3.9%, 22.4%

HSLhsl(278.3, 70.1%, 13.1%)

HSV / HSBhsv(278.3, 82.5%, 22.4%)

CMYK29.8%, 82.5%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,624,057

CSS custom property--colour: #280A39;

Brightness & contrast

Relative luminance0.00964WCAG 2.x, 0 is black and 1 is white

Perceived brightness30.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.61:1

Contrast with white17.61:1WCAG normal text: AAA

Contrast with black1.19:1WCAG normal text: Fail

Greyscale equivalent#141414

Inverted#D7F5C6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00183Ano red cones; affects about 1% of men; ΔE 18.4 from the original

Deuteranopia#041938no green cones; the most common form, about 1% of men; ΔE 19.4 from the original

Tritanopia#261420no blue cones; rare, and affects men and women equally; ΔE 23.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.61:1WCAG large text: AAA

Contrast with black, large text1.19:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 27.7 Dark slateblue · ΔE 28.8 Black · ΔE 35.5 Rebecca purple · ΔE 38.2 Indigo · ΔE 41.6 Purple · ΔE 42

Nearest named CSS colourMidnight blue (#191970)ΔE 27.66, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B390A

Analogous#110A39, #390A32

Triadic#39280A, #0A3928

Split complementary#33390A, #0A3910

Tetradic#39100A, #1B390A, #0A3239

Tints, shades & saturation

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

Lighter +40%#9F34DB

Lighter +30%#8321BB

Lighter +20%#651990

Lighter +10%#461264

Darker −10%#0A020E

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#2A0241

Less saturated −25%#261231

Channel breakdown

R40

G10

B57

Red40 (15.7%)

Green10 (3.9%)

Blue57 (22.4%)

Hue278.3°

Saturation (HSL)70.15%

Lightness13.14%

Dominant channelBlue

Hex per channelR 28 · G 0A · B 39

Keep nerding

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

#280A39

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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