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Colour

#31548D

  • #31548D
  • Blue
  • Dark
  • Nearest: Steel blue

#31548D is a blue with RGB values 49, 84, 141 and HSL 217°, 48%, 37%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#31548D#31548D
HEX#31548D
RGBrgb(49, 84, 141)
RGB (0–1)0.1922, 0.3294, 0.5529
RGB percentages19.2%, 32.9%, 55.3%
HSLhsl(217.2, 48.4%, 37.3%)
HSV / HSBhsv(217.2, 65.2%, 55.3%)
CMYK65.2%, 40.4%, 0%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,232,909
CSS custom property--colour: #31548D;

Brightness & contrast

Relative luminance0.08917WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.54:1
Contrast with white7.54:1WCAG normal text: AAA
Contrast with black2.78:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#CEAB72

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3B598Fno red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#2E508Cno green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#006169no blue cones; rare, and affects men and women equally; ΔE 36.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.54:1WCAG large text: AAA
Contrast with black, large text2.78:1WCAG large text: Fail

Named colours

Steel blue · ΔE 20Dark slateblue · ΔE 21.2Cornflower blue · ΔE 29.7Slate grey · ΔE 31.3Light slate grey · ΔE 32.7Midnight blue · ΔE 35.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 20.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D6A31
Analogous#31828D, #3C318D
Triadic#8D3154, #548D31
Split complementary#8D3C31, #828D31
Tetradic#8D3182, #8D6A31, #318D3C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A9BEE1
Lighter +30%#83A2D4
Lighter +20%#5D85C7
Lighter +10%#3E6BB3
Darker −10%#243D67
Darker −20%#172741
Darker −30%#0A101B
Darker −40%#000000
More saturated +25%#194EA5
Less saturated −25%#495A75

Channel breakdown

R49
G84
B141
Red49 (19.2%)
Green84 (32.9%)
Blue141 (55.3%)
Hue217.17°
Saturation (HSL)48.42%
Lightness37.25%
Dominant channelBlue
Hex per channelR 31 · G 54 · B 8D

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Every value on this page was computed from “31548d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.