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Colour

#280A68

  • #280A68
  • Violet
  • Dark
  • Nearest: Midnight blue

#280A68 is a violet with RGB values 40, 10, 104 and HSL 259°, 82%, 22%. It is a dark colour, so white text on it reaches 15.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#280A68#280A68
HEX#280A68
RGBrgb(40, 10, 104)
RGB (0–1)0.1569, 0.0392, 0.4078
RGB percentages15.7%, 3.9%, 40.8%
HSLhsl(259.1, 82.5%, 22.4%)
HSV / HSBhsv(259.1, 90.4%, 40.8%)
CMYK61.5%, 90.4%, 0%, 59.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,624,104
CSS custom property--colour: #280A68;

Brightness & contrast

Relative luminance0.01668WCAG 2.x, 0 is black and 1 is white
Perceived brightness42.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.75:1
Contrast with white15.75:1WCAG normal text: AAA
Contrast with black1.33:1WCAG normal text: Fail
Greyscale equivalent#171717
Inverted#D7F597

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00256Ano red cones; affects about 1% of men; ΔE 20.2 from the original
Deuteranopia#002066no green cones; the most common form, about 1% of men; ΔE 18 from the original
Tritanopia#05283Bno blue cones; rare, and affects men and women equally; ΔE 53.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.75:1WCAG large text: AAA
Contrast with black, large text1.33:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 7.1Indigo · ΔE 15.9Navy · ΔE 19.1Rebecca purple · ΔE 19.8Dark slateblue · ΔE 21.9Dark blue · ΔE 24
Nearest named CSS colourMidnight blue (#191970)ΔE 7.15, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4A680A
Analogous#0A1B68, #570A68
Triadic#68280A, #0A6828
Split complementary#68570A, #1B680A
Tetradic#680A1B, #4A680A, #0A6857

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8250EE
Lighter +30%#6121EA
Lighter +20%#4C13C5
Lighter +10%#3A0E97
Darker −10%#160639
Darker −20%#04010B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#240072
Less saturated −25%#2D185A

Channel breakdown

R40
G10
B104
Red40 (15.7%)
Green10 (3.9%)
Blue104 (40.8%)
Hue259.15°
Saturation (HSL)82.46%
Lightness22.35%
Dominant channelBlue
Hex per channelR 28 · G 0A · B 68

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Every value on this page was computed from “280a68” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.