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Recognised as Colour

#003363

  • #003363
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003363 is a blue with RGB values 0, 51, 99 and HSL 209°, 100%, 19%. 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

#003363#003363
HEX#003363
RGBrgb(0, 51, 99)
RGB (0–1)0, 0.2, 0.3882
RGB percentages0%, 20%, 38.8%
HSLhsl(209.1, 100%, 19.4%)
HSV / HSBhsv(209.1, 100%, 38.8%)
CMYK100%, 48.5%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,155
CSS custom property--colour: #003363;

Brightness & contrast

Relative luminance0.03269WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.7:1
Contrast with white12.7:1WCAG normal text: AAA
Contrast with black1.65:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#FFCC9C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#183765no red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#002F62no green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#003F46no blue cones; rare, and affects men and women equally; ΔE 31 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.7:1WCAG large text: AAA
Contrast with black, large text1.65:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 24.7Midnight blue · ΔE 31.7Steel blue · ΔE 32.8Dark slate grey · ΔE 35.1Black · ΔE 39.2Slate grey · ΔE 39.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.67, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#633000
Analogous#006362, #000163
Triadic#630033, #336300
Split complementary#630001, #636200
Tetradic#620063, #633000, #016300

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#309BFF
Lighter +30%#0082FC
Lighter +20%#0068C9
Lighter +10%#004D96
Darker −10%#001930
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003363
Less saturated −25%#0C3357

Channel breakdown

R0
G51
B99
Red0 (0%)
Green51 (20%)
Blue99 (38.8%)
Hue209.09°
Saturation (HSL)100%
Lightness19.41%
Dominant channelBlue
Hex per channelR 00 · G 33 · B 63

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Every value on this page was computed from “hex 003363” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.