Colour

#000003

#000003
Blue
Dark
Nearest: Black

#000003 is a blue with RGB values 0, 0, 3 and HSL 240°, 100%, 1%. It is a dark colour, so white text on it reaches 21:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#000003#000003

HEX#000003

RGBrgb(0, 0, 3)

RGB (0–1)0, 0, 0.0118

RGB percentages0%, 0%, 1.2%

HSLhsl(240, 100%, 0.6%)

HSV / HSBhsv(240, 100%, 1.2%)

CMYK100%, 100%, 0%, 98.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3

CSS custom property--colour: #000003;

Brightness & contrast

Relative luminance0.00007WCAG 2.x, 0 is black and 1 is white

Perceived brightness1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 20.97:1

Contrast with white20.97:1WCAG normal text: AAA

Contrast with black1:1WCAG normal text: Fail

Greyscale equivalent#000000

Inverted#FFFFFC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#000003no red cones; affects about 1% of men; ΔE 0 from the original

Deuteranopia#000003no green cones; the most common form, about 1% of men; ΔE 0 from the original

Tritanopia#000001no blue cones; rare, and affects men and women equally; ΔE 0.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text20.97:1WCAG large text: AAA

Contrast with black, large text1:1WCAG large text: Fail

Named colours

Black · ΔE 1.2 Dark slate grey · ΔE 33.6 Dim grey · ΔE 44.4 Gray · ΔE 53.5 Slate grey · ΔE 53.7 Dark olivegreen · ΔE 56.2

Nearest named CSS colourBlack (#000000)ΔE 1.21, below the just-noticeable difference

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#030300

Analogous#000203, #020003

Triadic#030000, #000300

Split complementary#030200, #020300

Tetradic#030002, #030300, #000302

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#0000CF

Lighter +30%#00009C

Lighter +20%#000069

Lighter +10%#000036

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#000003

Less saturated −25%#000003

Channel breakdown

Red0 (0%)

Green0 (0%)

Blue3 (1.2%)

Hue240°

Saturation (HSL)100%

Lightness0.59%

Dominant channelBlue

Hex per channelR 00 · G 00 · B 03

Keep nerding

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#000003

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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