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Recognised as Colour

#31547A

  • #31547A
  • Blue
  • Dark
  • Nearest: Steel blue

#31547A is a blue with RGB values 49, 84, 122 and HSL 211°, 43%, 34%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#31547A#31547A
HEX#31547A
RGBrgb(49, 84, 122)
RGB (0–1)0.1922, 0.3294, 0.4784
RGB percentages19.2%, 32.9%, 47.8%
HSLhsl(211.2, 42.7%, 33.5%)
HSV / HSBhsv(211.2, 59.8%, 47.8%)
CMYK59.8%, 31.1%, 0%, 52.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,232,890
CSS custom property--colour: #31547A;

Brightness & contrast

Relative luminance0.08399WCAG 2.x, 0 is black and 1 is white
Perceived brightness81 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.84:1
Contrast with white7.84:1WCAG normal text: AAA
Contrast with black2.68:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#CEAB85

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#44567Cno red cones; affects about 1% of men; ΔE 4.9 from the original
Deuteranopia#3B4F79no green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#005D61no blue cones; rare, and affects men and women equally; ΔE 26.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.84:1WCAG large text: AAA
Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Steel blue · ΔE 19.3Slate grey · ΔE 23.4Dark slate grey · ΔE 24.7Light slate grey · ΔE 25.6Dim grey · ΔE 27.1Dark slateblue · ΔE 31.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 19.31, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7A5731
Analogous#31787A, #33317A
Triadic#7A3154, #547A31
Split complementary#7A3331, #787A31
Tetradic#7A3178, #7A5731, #317A33

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9FBAD8
Lighter +30%#7AA0CA
Lighter +20%#5686BB
Lighter +10%#406D9E
Darker −10%#223B56
Darker −20%#142231
Darker −30%#05090D
Darker −40%#000000
More saturated +25%#1C538F
Less saturated −25%#465565

Channel breakdown

R49
G84
B122
Red49 (19.2%)
Green84 (32.9%)
Blue122 (47.8%)
Hue211.23°
Saturation (HSL)42.69%
Lightness33.53%
Dominant channelBlue
Hex per channelR 31 · G 54 · B 7A

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Every value on this page was computed from “31547a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.