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Recognised as Colour

#1F0F68

  • #1F0F68
  • Blue
  • Dark
  • Nearest: Midnight blue

#1F0F68 is a blue with RGB values 31, 15, 104 and HSL 251°, 75%, 23%. It is a dark colour, so white text on it reaches 15.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#1F0F68#1F0F68
HEX#1F0F68
RGBrgb(31, 15, 104)
RGB (0–1)0.1216, 0.0588, 0.4078
RGB percentages12.2%, 5.9%, 40.8%
HSLhsl(250.8, 74.8%, 23.3%)
HSV / HSBhsv(250.8, 85.6%, 40.8%)
CMYK70.2%, 85.6%, 0%, 59.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,035,560
CSS custom property--colour: #1F0F68;

Brightness & contrast

Relative luminance0.01632WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.83:1
Contrast with white15.83:1WCAG normal text: AAA
Contrast with black1.33:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#E0F097

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00266Ano red cones; affects about 1% of men; ΔE 18.3 from the original
Deuteranopia#001F66no green cones; the most common form, about 1% of men; ΔE 14.2 from the original
Tritanopia#002B3Cno blue cones; rare, and affects men and women equally; ΔE 53.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.83:1WCAG large text: AAA
Contrast with black, large text1.33:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 4.4Indigo · ΔE 18.6Navy · ΔE 20.5Dark slateblue · ΔE 20.6Rebecca purple · ΔE 21Dark blue · ΔE 25.4
Nearest named CSS colourMidnight blue (#191970)ΔE 4.41, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#58680F
Analogous#0F2B68, #4C0F68
Triadic#681F0F, #0F681F
Split complementary#684C0F, #2B680F
Tetradic#680F2B, #58680F, #0F684C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#755CE7
Lighter +30%#4F2FE1
Lighter +20%#3A1CC1
Lighter +10%#2C1595
Darker −10%#12093B
Darker −20%#04020F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#150077
Less saturated −25%#291E59

Channel breakdown

R31
G15
B104
Red31 (12.2%)
Green15 (5.9%)
Blue104 (40.8%)
Hue250.79°
Saturation (HSL)74.79%
Lightness23.33%
Dominant channelBlue
Hex per channelR 1F · G 0F · B 68

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Every value on this page was computed from “1f0f68” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.