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Colour

#00316B

  • #00316B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#00316B is a blue with RGB values 0, 49, 107 and HSL 213°, 100%, 21%. It is a dark colour, so white text on it reaches 12.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00316B#00316B
HEX#00316B
RGBrgb(0, 49, 107)
RGB (0–1)0, 0.1922, 0.4196
RGB percentages0%, 19.2%, 42%
HSLhsl(212.5, 100%, 21%)
HSV / HSBhsv(212.5, 100%, 42%)
CMYK100%, 54.2%, 0%, 58%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,651
CSS custom property--colour: #00316B;

Brightness & contrast

Relative luminance0.03258WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.71:1
Contrast with white12.71:1WCAG normal text: AAA
Contrast with black1.65:1WCAG normal text: Fail
Greyscale equivalent#2B2B2B
Inverted#FFCE94

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#07376Dno red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#002E6Ano green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#003F49no blue cones; rare, and affects men and women equally; ΔE 36.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.71:1WCAG large text: AAA
Contrast with black, large text1.65:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.8Midnight blue · ΔE 24.7Steel blue · ΔE 35.1Rebecca purple · ΔE 35.7Slate blue · ΔE 40.4Royal blue · ΔE 41.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.81, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6B3A00
Analogous#00666B, #05006B
Triadic#6B0031, #316B00
Split complementary#6B0400, #676B00
Tetradic#6B0066, #6B3A00, #006B04

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3893FF
Lighter +30%#0577FF
Lighter +20%#0060D1
Lighter +10%#00489E
Darker −10%#001A38
Darker −20%#000205
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00316B
Less saturated −25%#0D325E

Channel breakdown

R0
G49
B107
Red0 (0%)
Green49 (19.2%)
Blue107 (42%)
Hue212.52°
Saturation (HSL)100%
Lightness20.98%
Dominant channelBlue
Hex per channelR 00 · G 31 · B 6B

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Every value on this page was computed from “00316b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.