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Colour

#1F39FF

  • #1F39FF
  • Blue
  • Dark
  • Nearest: Medium blue

#1F39FF is a blue with RGB values 31, 57, 255 and HSL 233°, 100%, 56%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#1F39FF#1F39FF
HEX#1F39FF
RGBrgb(31, 57, 255)
RGB (0–1)0.1216, 0.2235, 1
RGB percentages12.2%, 22.4%, 100%
HSLhsl(233, 100%, 56.1%)
HSV / HSBhsv(233, 87.8%, 100%)
CMYK87.8%, 77.6%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,046,463
CSS custom property--colour: #1F39FF;

Brightness & contrast

Relative luminance0.10438WCAG 2.x, 0 is black and 1 is white
Perceived brightness98 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.8:1
Contrast with white6.8:1WCAG normal text: AA
Contrast with black3.09:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#E0C600

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0066FFno red cones; affects about 1% of men; ΔE 32.5 from the original
Deuteranopia#004FFCno green cones; the most common form, about 1% of men; ΔE 16.3 from the original
Tritanopia#00779Cno blue cones; rare, and affects men and women equally; ΔE 103.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.8:1WCAG large text: AAA
Contrast with black, large text3.09:1WCAG large text: AA

Named colours

Medium blue · ΔE 15.6Blue · ΔE 20.8Blue violet · ΔE 24Dark violet · ΔE 30.4Dark orchid · ΔE 37.6Dark blue · ΔE 39.1
Nearest named CSS colourMedium blue (#0000CD)ΔE 15.59, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFE51F
Analogous#1FA9FF, #751FFF
Triadic#FF1F39, #39FF1F
Split complementary#FF751F, #A9FF1F
Tetradic#FF1FA9, #FFE51F, #1FFF75

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBEDFF
Lighter +30%#B8C0FF
Lighter +20%#8593FF
Lighter +10%#5266FF
Darker −10%#001BEB
Darker −20%#0015B8
Darker −30%#000F85
Darker −40%#000A52
More saturated +25%#1F39FF
Less saturated −25%#3B4EE3

Channel breakdown

R31
G57
B255
Red31 (12.2%)
Green57 (22.4%)
Blue255 (100%)
Hue233.04°
Saturation (HSL)100%
Lightness56.08%
Dominant channelBlue
Hex per channelR 1F · G 39 · B FF

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Every value on this page was computed from “1f39ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.