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Recognised as Colour

#31356A

  • #31356A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#31356A is a blue with RGB values 49, 53, 106 and HSL 236°, 37%, 30%. It is a dark colour, so white text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#31356A#31356A
HEX#31356A
RGBrgb(49, 53, 106)
RGB (0–1)0.1922, 0.2078, 0.4157
RGB percentages19.2%, 20.8%, 41.6%
HSLhsl(235.8, 36.8%, 30.4%)
HSV / HSBhsv(235.8, 53.8%, 41.6%)
CMYK53.8%, 50%, 0%, 58.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,224,938
CSS custom property--colour: #31356A;

Brightness & contrast

Relative luminance0.0424WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.36:1
Contrast with white11.36:1WCAG normal text: AAA
Contrast with black1.85:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#CECA95

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1D3C6Cno red cones; affects about 1% of men; ΔE 8.5 from the original
Deuteranopia#183869no green cones; the most common form, about 1% of men; ΔE 7.7 from the original
Tritanopia#1A404Ano blue cones; rare, and affects men and women equally; ΔE 32.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.36:1WCAG large text: AAA
Contrast with black, large text1.85:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.7Midnight blue · ΔE 26.1Rebecca purple · ΔE 33.2Steel blue · ΔE 33.8Dark slate grey · ΔE 39.1Slate grey · ΔE 39.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.66, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6A6631
Analogous#31526A, #4A316A
Triadic#6A3135, #356A31
Split complementary#6A4A31, #526A31
Tetradic#6A3152, #6A6631, #316A4A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#989CCF
Lighter +30%#757ABF
Lighter +20%#5259AF
Lighter +10%#41468D
Darker −10%#212447
Darker −20%#111224
Darker −30%#010101
Darker −40%#000000
More saturated +25%#1E247D
Less saturated −25%#444657

Channel breakdown

R49
G53
B106
Red49 (19.2%)
Green53 (20.8%)
Blue106 (41.6%)
Hue235.79°
Saturation (HSL)36.77%
Lightness30.39%
Dominant channelBlue
Hex per channelR 31 · G 35 · B 6A

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Every value on this page was computed from “31356a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.