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Recognised as Colour

#313D70

  • #313D70
  • Blue
  • Dark
  • Nearest: Dark slateblue

#313D70 is a blue with RGB values 49, 61, 112 and HSL 229°, 39%, 32%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#313D70#313D70
HEX#313D70
RGBrgb(49, 61, 112)
RGB (0–1)0.1922, 0.2392, 0.4392
RGB percentages19.2%, 23.9%, 43.9%
HSLhsl(228.6, 39.1%, 31.6%)
HSV / HSBhsv(228.6, 56.3%, 43.9%)
CMYK56.3%, 45.5%, 0%, 56.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,226,992
CSS custom property--colour: #313D70;

Brightness & contrast

Relative luminance0.0516WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.33:1
Contrast with white10.33:1WCAG normal text: AAA
Contrast with black2.03:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#CEC28F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#274372no red cones; affects about 1% of men; ΔE 5.8 from the original
Deuteranopia#203E6Fno green cones; the most common form, about 1% of men; ΔE 4.8 from the original
Tritanopia#124851no blue cones; rare, and affects men and women equally; ΔE 32.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.33:1WCAG large text: AAA
Contrast with black, large text2.03:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.7Steel blue · ΔE 29.6Midnight blue · ΔE 29.7Slate grey · ΔE 35.5Rebecca purple · ΔE 35.8Dark slate grey · ΔE 36.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.69, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#706431
Analogous#315D70, #443170
Triadic#70313D, #3D7031
Split complementary#704431, #5D7031
Tetradic#70315D, #706431, #317044

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9AA5D3
Lighter +30%#7785C3
Lighter +20%#5366B4
Lighter +10%#415093
Darker −10%#212A4D
Darker −20%#121629
Darker −30%#020306
Darker −40%#000000
More saturated +25%#1D3184
Less saturated −25%#45495C

Channel breakdown

R49
G61
B112
Red49 (19.2%)
Green61 (23.9%)
Blue112 (43.9%)
Hue228.57°
Saturation (HSL)39.13%
Lightness31.57%
Dominant channelBlue
Hex per channelR 31 · G 3D · B 70

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Every value on this page was computed from “313d70” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.