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Recognised as Colour

#1F4685

  • #1F4685
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1F4685 is a blue with RGB values 31, 70, 133 and HSL 217°, 62%, 32%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1F4685#1F4685
HEX#1F4685
RGBrgb(31, 70, 133)
RGB (0–1)0.1216, 0.2745, 0.5216
RGB percentages12.2%, 27.5%, 52.2%
HSLhsl(217.1, 62.2%, 32.2%)
HSV / HSBhsv(217.1, 76.7%, 52.2%)
CMYK76.7%, 47.4%, 0%, 47.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,049,669
CSS custom property--colour: #1F4685;

Brightness & contrast

Relative luminance0.06365WCAG 2.x, 0 is black and 1 is white
Perceived brightness72 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.24:1
Contrast with white9.24:1WCAG normal text: AAA
Contrast with black2.27:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#E0B97A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#254C87no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#0E4384no green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#00555Fno blue cones; rare, and affects men and women equally; ΔE 39 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.24:1WCAG large text: AAA
Contrast with black, large text2.27:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.5Steel blue · ΔE 27.1Midnight blue · ΔE 28.2Cornflower blue · ΔE 33.1Rebecca purple · ΔE 34.1Royal blue · ΔE 35.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.46, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#855E1F
Analogous#1F7985, #2B1F85
Triadic#851F46, #46851F
Split complementary#852B1F, #79851F
Tetradic#851F79, #855E1F, #1F852B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8CAEE4
Lighter +30%#6290DB
Lighter +20%#3973D1
Lighter +10%#295CAE
Darker −10%#15305C
Darker −20%#0C1A32
Darker −30%#020509
Darker −40%#000000
More saturated +25%#0B4199
Less saturated −25%#334B71

Channel breakdown

R31
G70
B133
Red31 (12.2%)
Green70 (27.5%)
Blue133 (52.2%)
Hue217.06°
Saturation (HSL)62.2%
Lightness32.16%
Dominant channelBlue
Hex per channelR 1F · G 46 · B 85

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Every value on this page was computed from “1f4685” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.