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Recognised as Colour

#131D48

  • #131D48
  • Blue
  • Dark
  • Nearest: Dark slateblue

#131D48 is a blue with RGB values 19, 29, 72 and HSL 229°, 58%, 18%. It is a dark colour, so white text on it reaches 16.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#131D48#131D48
HEX#131D48
RGBrgb(19, 29, 72)
RGB (0–1)0.0745, 0.1137, 0.2824
RGB percentages7.5%, 11.4%, 28.2%
HSLhsl(228.7, 58.2%, 17.8%)
HSV / HSBhsv(228.7, 73.6%, 28.2%)
CMYK73.6%, 59.7%, 0%, 71.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,252,680
CSS custom property--colour: #131D48;

Brightness & contrast

Relative luminance0.01485WCAG 2.x, 0 is black and 1 is white
Perceived brightness34.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.19:1
Contrast with white16.19:1WCAG normal text: AAA
Contrast with black1.3:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#ECE2B7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#02234Ano red cones; affects about 1% of men; ΔE 6.5 from the original
Deuteranopia#001E47no green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#00272Fno blue cones; rare, and affects men and women equally; ΔE 29.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.19:1WCAG large text: AAA
Contrast with black, large text1.3:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 26.8Midnight blue · ΔE 29Black · ΔE 33.3Dark slate grey · ΔE 39.1Rebecca purple · ΔE 41.4Steel blue · ΔE 43.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 26.77, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#483E13
Analogous#133848, #241348
Triadic#48131D, #1D4813
Split complementary#482413, #384813
Tetradic#481337, #483E13, #134824

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#556DD2
Lighter +30%#334EC1
Lighter +20%#283E99
Lighter +10%#1E2D70
Darker −10%#080D20
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#081653
Less saturated −25%#1E243D

Channel breakdown

R19
G29
B72
Red19 (7.5%)
Green29 (11.4%)
Blue72 (28.2%)
Hue228.68°
Saturation (HSL)58.24%
Lightness17.84%
Dominant channelBlue
Hex per channelR 13 · G 1D · B 48

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Every value on this page was computed from “131d48” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.