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Colour

#00318F

  • #00318F
  • Blue
  • Dark
  • Nearest: Midnight blue

#00318F is a blue with RGB values 0, 49, 143 and HSL 219°, 100%, 28%. It is a dark colour, so white text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#00318F#00318F
HEX#00318F
RGBrgb(0, 49, 143)
RGB (0–1)0, 0.1922, 0.5608
RGB percentages0%, 19.2%, 56.1%
HSLhsl(219.4, 100%, 28%)
HSV / HSBhsv(219.4, 100%, 56.1%)
CMYK100%, 65.7%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,687
CSS custom property--colour: #00318F;

Brightness & contrast

Relative luminance0.0418WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.44:1
Contrast with white11.44:1WCAG normal text: AAA
Contrast with black1.84:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#FFCE70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004092no red cones; affects about 1% of men; ΔE 11.7 from the original
Deuteranopia#00338Dno green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#004A5Bno blue cones; rare, and affects men and women equally; ΔE 56.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.44:1WCAG large text: AAA
Contrast with black, large text1.84:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.6Dark slateblue · ΔE 14.9Rebecca purple · ΔE 20.5Slate blue · ΔE 23.4Royal blue · ΔE 25.5Navy · ΔE 25.9
Nearest named CSS colourMidnight blue (#191970)ΔE 11.63, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F5E00
Analogous#00788F, #17008F
Triadic#8F0031, #318F00
Split complementary#8F1700, #788F00
Tetradic#8F0078, #8F5E00, #008F17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5C94FF
Lighter +30%#2972FF
Lighter +20%#0054F5
Lighter +10%#0042C2
Darker −10%#00205C
Darker −20%#000E29
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00318F
Less saturated −25%#12377D

Channel breakdown

R0
G49
B143
Red0 (0%)
Green49 (19.2%)
Blue143 (56.1%)
Hue219.44°
Saturation (HSL)100%
Lightness28.04%
Dominant channelBlue
Hex per channelR 00 · G 31 · B 8F

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Every value on this page was computed from “00318f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.