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Recognised as Colour

#31404E

  • #31404E
  • Blue
  • Dark
  • Nearest: Dark slate grey

#31404E is a blue with RGB values 49, 64, 78 and HSL 209°, 23%, 25%. It is a dark colour, so white text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#31404E#31404E
HEX#31404E
RGBrgb(49, 64, 78)
RGB (0–1)0.1922, 0.251, 0.3059
RGB percentages19.2%, 25.1%, 30.6%
HSLhsl(209, 22.8%, 24.9%)
HSV / HSBhsv(209, 37.2%, 30.6%)
CMYK37.2%, 17.9%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,227,726
CSS custom property--colour: #31404E;

Brightness & contrast

Relative luminance0.0487WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.64:1
Contrast with white10.64:1WCAG normal text: AAA
Contrast with black1.97:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#CEBFB1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3B404Fno red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#373D4Eno green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#284345no blue cones; rare, and affects men and women equally; ΔE 9.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.64:1WCAG large text: AAA
Contrast with black, large text1.97:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 12.7Dim grey · ΔE 20.9Slate grey · ΔE 26.5Black · ΔE 28.4Gray · ΔE 29.2Light slate grey · ΔE 29.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 12.74, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4E3F31
Analogous#314E4E, #31314E
Triadic#4E3140, #404E31
Split complementary#4E3132, #4E4E31
Tetradic#4D314E, #4E3F31, #324E31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#91A6BA
Lighter +30%#728DA6
Lighter +20%#58738D
Lighter +10%#455A6D
Darker −10%#1D262F
Darker −20%#0A0D0F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#21415E
Less saturated −25%#404040

Channel breakdown

R49
G64
B78
Red49 (19.2%)
Green64 (25.1%)
Blue78 (30.6%)
Hue208.97°
Saturation (HSL)22.83%
Lightness24.9%
Dominant channelBlue
Hex per channelR 31 · G 40 · B 4E

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Every value on this page was computed from “31404e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.