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Recognised as Colour

#000042

  • #000042
  • Blue
  • Dark
  • Nearest: Midnight blue

#000042 is a blue with RGB values 0, 0, 66 and HSL 240°, 100%, 13%. It is a dark colour, so white text on it reaches 19.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#000042#000042
HEX#000042
RGBrgb(0, 0, 66)
RGB (0–1)0, 0, 0.2588
RGB percentages0%, 0%, 25.9%
HSLhsl(240, 100%, 12.9%)
HSV / HSBhsv(240, 100%, 25.9%)
CMYK100%, 100%, 0%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer66
CSS custom property--colour: #000042;

Brightness & contrast

Relative luminance0.00393WCAG 2.x, 0 is black and 1 is white
Perceived brightness22.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.47:1
Contrast with white19.47:1WCAG normal text: AAA
Contrast with black1.08:1WCAG normal text: Fail
Greyscale equivalent#050505
Inverted#FFFFBD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001144no red cones; affects about 1% of men; ΔE 9.9 from the original
Deuteranopia#000941no green cones; the most common form, about 1% of men; ΔE 6 from the original
Tritanopia#001623no blue cones; rare, and affects men and women equally; ΔE 38.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.47:1WCAG large text: AAA
Contrast with black, large text1.08:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 17.8Dark slateblue · ΔE 27.5Indigo · ΔE 35.1Rebecca purple · ΔE 35.6Navy · ΔE 35.8Dark blue · ΔE 41.1
Nearest named CSS colourMidnight blue (#191970)ΔE 17.84, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#424200
Analogous#002142, #210042
Triadic#420000, #004200
Split complementary#422100, #214200
Tetradic#420021, #424200, #004221

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#0F0FFF
Lighter +30%#0000DB
Lighter +20%#0000A8
Lighter +10%#000075
Darker −10%#00000F
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000042
Less saturated −25%#08083A

Channel breakdown

R0
G0
B66
Red0 (0%)
Green0 (0%)
Blue66 (25.9%)
Hue240°
Saturation (HSL)100%
Lightness12.94%
Dominant channelBlue
Hex per channelR 00 · G 00 · B 42

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Every value on this page was computed from “hex 000042” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.