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Recognised as Colour

#131F50

  • #131F50
  • Blue
  • Dark
  • Nearest: Dark slateblue

#131F50 is a blue with RGB values 19, 31, 80 and HSL 228°, 62%, 19%. It is a dark colour, so white text on it reaches 15.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#131F50#131F50
HEX#131F50
RGBrgb(19, 31, 80)
RGB (0–1)0.0745, 0.1216, 0.3137
RGB percentages7.5%, 12.2%, 31.4%
HSLhsl(228.2, 61.6%, 19.4%)
HSV / HSBhsv(228.2, 76.3%, 31.4%)
CMYK76.3%, 61.2%, 0%, 68.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,253,200
CSS custom property--colour: #131F50;

Brightness & contrast

Relative luminance0.01698WCAG 2.x, 0 is black and 1 is white
Perceived brightness37.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.68:1
Contrast with white15.68:1WCAG normal text: AAA
Contrast with black1.34:1WCAG normal text: Fail
Greyscale equivalent#202020
Inverted#ECE0AF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002652no red cones; affects about 1% of men; ΔE 7.2 from the original
Deuteranopia#00214Fno green cones; the most common form, about 1% of men; ΔE 4.5 from the original
Tritanopia#002B34no blue cones; rare, and affects men and women equally; ΔE 32.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.68:1WCAG large text: AAA
Contrast with black, large text1.34:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 23.2Midnight blue · ΔE 25.2Black · ΔE 37.3Rebecca purple · ΔE 37.8Dark slate grey · ΔE 41.9Steel blue · ΔE 42.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.25, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#504413
Analogous#133E50, #251350
Triadic#50131F, #1F5013
Split complementary#502513, #3E5013
Tetradic#50133E, #504413, #135025

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5871D7
Lighter +30%#304FCC
Lighter +20%#273FA2
Lighter +10%#1D2F79
Darker −10%#090F27
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#07175C
Less saturated −25%#1F2744

Channel breakdown

R19
G31
B80
Red19 (7.5%)
Green31 (12.2%)
Blue80 (31.4%)
Hue228.2°
Saturation (HSL)61.62%
Lightness19.41%
Dominant channelBlue
Hex per channelR 13 · G 1F · B 50

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Every value on this page was computed from “131f50” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.