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Recognised as Colour

#003899

  • #003899
  • Blue
  • Dark
  • Nearest: Midnight blue

#003899 is a blue with RGB values 0, 56, 153 and HSL 218°, 100%, 30%. It is a dark colour, so white text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#003899#003899
HEX#003899
RGBrgb(0, 56, 153)
RGB (0–1)0, 0.2196, 0.6
RGB percentages0%, 22%, 60%
HSLhsl(218, 100%, 30%)
HSV / HSBhsv(218, 100%, 60%)
CMYK100%, 63.4%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,489
CSS custom property--colour: #003899;

Brightness & contrast

Relative luminance0.05128WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.37:1
Contrast with white10.37:1WCAG normal text: AAA
Contrast with black2.03:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#FFC766

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00479Cno red cones; affects about 1% of men; ΔE 11.6 from the original
Deuteranopia#003A97no green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#005263no blue cones; rare, and affects men and women equally; ΔE 57.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.37:1WCAG large text: AAA
Contrast with black, large text2.03:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 14.8Dark slateblue · ΔE 15.3Rebecca purple · ΔE 20.8Slate blue · ΔE 21.1Royal blue · ΔE 22.4Indigo · ΔE 27.3
Nearest named CSS colourMidnight blue (#191970)ΔE 14.81, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#996100
Analogous#008599, #140099
Triadic#990038, #389900
Split complementary#991400, #859900
Tetradic#990085, #996100, #009914

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#669EFF
Lighter +30%#337EFF
Lighter +20%#005DFF
Lighter +10%#004BCC
Darker −10%#002566
Darker −20%#001333
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003899
Less saturated −25%#133D86

Channel breakdown

R0
G56
B153
Red0 (0%)
Green56 (22%)
Blue153 (60%)
Hue218.04°
Saturation (HSL)100%
Lightness30%
Dominant channelBlue
Hex per channelR 00 · G 38 · B 99

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Every value on this page was computed from “hex 003899” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.