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Colour

#131D31

  • #131D31
  • Blue
  • Dark
  • Nearest: Black

#131D31 is a blue with RGB values 19, 29, 49 and HSL 220°, 44%, 13%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#131D31#131D31
HEX#131D31
RGBrgb(19, 29, 49)
RGB (0–1)0.0745, 0.1137, 0.1922
RGB percentages7.5%, 11.4%, 19.2%
HSLhsl(220, 44.1%, 13.3%)
HSV / HSBhsv(220, 61.2%, 19.2%)
CMYK61.2%, 40.8%, 0%, 80.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,252,657
CSS custom property--colour: #131D31;

Brightness & contrast

Relative luminance0.01239WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.83:1
Contrast with white16.83:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#ECE2CE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#151F32no red cones; affects about 1% of men; ΔE 1.3 from the original
Deuteranopia#121C31no green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#062124no blue cones; rare, and affects men and women equally; ΔE 15.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.83:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 18.4Dark slate grey · ΔE 27.3Dim grey · ΔE 36.7Dark slateblue · ΔE 41.2Slate grey · ΔE 42.5Gray · ΔE 45.3
Nearest named CSS colourBlack (#000000)ΔE 18.42, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#312713
Analogous#132C31, #181331
Triadic#31131D, #1D3113
Split complementary#311813, #2C3113
Tetradic#31132C, #312713, #133118

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5377BD
Lighter +30%#3E5E9F
Lighter +20%#2F497B
Lighter +10%#213356
Darker −10%#05070C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B1A39
Less saturated −25%#1B2029

Channel breakdown

R19
G29
B49
Red19 (7.5%)
Green29 (11.4%)
Blue49 (19.2%)
Hue220°
Saturation (HSL)44.12%
Lightness13.33%
Dominant channelBlue
Hex per channelR 13 · G 1D · B 31

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Every value on this page was computed from “131d31” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.