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Recognised as Colour

#1F0F43

  • #1F0F43
  • Violet
  • Dark
  • Nearest: Midnight blue

#1F0F43 is a violet with RGB values 31, 15, 67 and HSL 258°, 63%, 16%. It is a dark colour, so white text on it reaches 17.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#1F0F43#1F0F43
HEX#1F0F43
RGBrgb(31, 15, 67)
RGB (0–1)0.1216, 0.0588, 0.2627
RGB percentages12.2%, 5.9%, 26.3%
HSLhsl(258.5, 63.4%, 16.1%)
HSV / HSBhsv(258.5, 77.6%, 26.3%)
CMYK53.7%, 77.6%, 0%, 73.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,035,523
CSS custom property--colour: #1F0F43;

Brightness & contrast

Relative luminance0.01038WCAG 2.x, 0 is black and 1 is white
Perceived brightness30.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.39:1
Contrast with white17.39:1WCAG normal text: AAA
Contrast with black1.21:1WCAG normal text: Fail
Greyscale equivalent#161616
Inverted#E0F0BC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001B45no red cones; affects about 1% of men; ΔE 13.4 from the original
Deuteranopia#001942no green cones; the most common form, about 1% of men; ΔE 13.3 from the original
Tritanopia#141C27no blue cones; rare, and affects men and women equally; ΔE 31.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.39:1WCAG large text: AAA
Contrast with black, large text1.21:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 22.5Dark slateblue · ΔE 24.9Rebecca purple · ΔE 35.4Indigo · ΔE 38.7Black · ΔE 38.8Purple · ΔE 41.9
Nearest named CSS colourMidnight blue (#191970)ΔE 22.5, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#33430F
Analogous#0F1943, #390F43
Triadic#431F0F, #0F431F
Split complementary#43390F, #19430F
Tetradic#430F19, #33430F, #0F4339

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7448D6
Lighter +30%#592BC0
Lighter +20%#462296
Lighter +10%#32186D
Darker −10%#0C0619
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1B054D
Less saturated −25%#231939

Channel breakdown

R31
G15
B67
Red31 (12.2%)
Green15 (5.9%)
Blue67 (26.3%)
Hue258.46°
Saturation (HSL)63.41%
Lightness16.08%
Dominant channelBlue
Hex per channelR 1F · G 0F · B 43

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Every value on this page was computed from “1f0f43” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.