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Recognised as Colour

#313F50

  • #313F50
  • Blue
  • Dark
  • Nearest: Dark slate grey

#313F50 is a blue with RGB values 49, 63, 80 and HSL 213°, 24%, 25%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#313F50#313F50
HEX#313F50
RGBrgb(49, 63, 80)
RGB (0–1)0.1922, 0.2471, 0.3137
RGB percentages19.2%, 24.7%, 31.4%
HSLhsl(212.9, 24%, 25.3%)
HSV / HSBhsv(212.9, 38.7%, 31.4%)
CMYK38.8%, 21.2%, 0%, 68.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,227,472
CSS custom property--colour: #313F50;

Brightness & contrast

Relative luminance0.04787WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.73:1
Contrast with white10.73:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#CEC0AF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#394051no red cones; affects about 1% of men; ΔE 2.7 from the original
Deuteranopia#353C50no green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#274345no blue cones; rare, and affects men and women equally; ΔE 11.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.73:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 14.7Dim grey · ΔE 21.9Slate grey · ΔE 26.8Black · ΔE 28.8Light slate grey · ΔE 29.9Gray · ΔE 30
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 14.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#504231
Analogous#314F50, #323150
Triadic#50313F, #3F5031
Split complementary#503231, #4F5031
Tetradic#50314F, #504231, #315032

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#91A4BC
Lighter +30%#728AA8
Lighter +20%#58718F
Lighter +10%#445870
Darker −10%#1E2630
Darker −20%#0A0D11
Darker −30%#000000
Darker −40%#000000
More saturated +25%#213D60
Less saturated −25%#414141

Channel breakdown

R49
G63
B80
Red49 (19.2%)
Green63 (24.7%)
Blue80 (31.4%)
Hue212.9°
Saturation (HSL)24.03%
Lightness25.29%
Dominant channelBlue
Hex per channelR 31 · G 3F · B 50

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Every value on this page was computed from “313f50” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.