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Recognised as Colour

#1F475E

  • #1F475E
  • Blue
  • Dark
  • Nearest: Dark slate grey

#1F475E is a blue with RGB values 31, 71, 94 and HSL 202°, 50%, 25%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1F475E#1F475E
HEX#1F475E
RGBrgb(31, 71, 94)
RGB (0–1)0.1216, 0.2784, 0.3686
RGB percentages12.2%, 27.8%, 36.9%
HSLhsl(201.9, 50.4%, 24.5%)
HSV / HSBhsv(201.9, 67%, 36.9%)
CMYK67%, 24.5%, 0%, 63.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,049,886
CSS custom property--colour: #1F475E;

Brightness & contrast

Relative luminance0.05606WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.9:1
Contrast with white9.9:1WCAG normal text: AAA
Contrast with black2.12:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#E0B8A1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C475Fno red cones; affects about 1% of men; ΔE 8.7 from the original
Deuteranopia#34405Eno green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#004D4Fno blue cones; rare, and affects men and women equally; ΔE 17.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.9:1WCAG large text: AAA
Contrast with black, large text2.12:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 15.4Dim grey · ΔE 24.7Slate grey · ΔE 25.8Steel blue · ΔE 28.1Light slate grey · ΔE 28.6Gray · ΔE 31.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 15.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E361F
Analogous#1F5E56, #1F275E
Triadic#5E1F47, #475E1F
Split complementary#5E1F27, #5E561F
Tetradic#561F5E, #5E361F, #275E1F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#77B1D2
Lighter +30%#519BC5
Lighter +20%#3881AB
Lighter +10%#2C6484
Darker −10%#122A38
Darker −20%#060D11
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F4B6E
Less saturated −25%#2F434E

Channel breakdown

R31
G71
B94
Red31 (12.2%)
Green71 (27.8%)
Blue94 (36.9%)
Hue201.9°
Saturation (HSL)50.4%
Lightness24.51%
Dominant channelBlue
Hex per channelR 1F · G 47 · B 5E

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Every value on this page was computed from “1f475e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.