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Recognised as Colour

#280A38

  • #280A38
  • Violet
  • Dark
  • Nearest: Midnight blue

#280A38 is a violet with RGB values 40, 10, 56 and HSL 279°, 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

#280A38#280A38
HEX#280A38
RGBrgb(40, 10, 56)
RGB (0–1)0.1569, 0.0392, 0.2196
RGB percentages15.7%, 3.9%, 22%
HSLhsl(279.1, 69.7%, 12.9%)
HSV / HSBhsv(279.1, 82.1%, 22%)
CMYK28.6%, 82.1%, 0%, 78%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,624,056
CSS custom property--colour: #280A38;

Brightness & contrast

Relative luminance0.00954WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.64:1
Contrast with white17.64:1WCAG normal text: AAA
Contrast with black1.19:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#D7F5C7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001739no red cones; affects about 1% of men; ΔE 17.9 from the original
Deuteranopia#051937no green cones; the most common form, about 1% of men; ΔE 19.5 from the original
Tritanopia#261420no blue cones; rare, and affects men and women equally; ΔE 22.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.64:1WCAG large text: AAA
Contrast with black, large text1.19:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 28.3Dark slateblue · ΔE 29.2Black · ΔE 34.9Rebecca purple · ΔE 38.7Indigo · ΔE 42.2Purple · ΔE 42.4
Nearest named CSS colourMidnight blue (#191970)ΔE 28.3, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1A380A
Analogous#110A38, #380A31
Triadic#38280A, #0A3828
Split complementary#31380A, #0A3811
Tetradic#38110A, #1A380A, #0A3138

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A033DB
Lighter +30%#8521BA
Lighter +20%#66198F
Lighter +10%#471263
Darker −10%#09020D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2B0240
Less saturated −25%#251230

Channel breakdown

R40
G10
B56
Red40 (15.7%)
Green10 (3.9%)
Blue56 (22%)
Hue279.13°
Saturation (HSL)69.7%
Lightness12.94%
Dominant channelBlue
Hex per channelR 28 · G 0A · B 38

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Every value on this page was computed from “280a38” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.