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Colour

#000155

  • #000155
  • Blue
  • Dark
  • Nearest: Midnight blue

#000155 is a blue with RGB values 0, 1, 85 and HSL 239°, 100%, 17%. It is a dark colour, so white text on it reaches 18.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#000155#000155
HEX#000155
RGBrgb(0, 1, 85)
RGB (0–1)0, 0.0039, 0.3333
RGB percentages0%, 0.4%, 33.3%
HSLhsl(239.3, 100%, 16.7%)
HSV / HSBhsv(239.3, 100%, 33.3%)
CMYK100%, 98.8%, 0%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer341
CSS custom property--colour: #000155;

Brightness & contrast

Relative luminance0.00678WCAG 2.x, 0 is black and 1 is white
Perceived brightness28.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.49:1
Contrast with white18.49:1WCAG normal text: AAA
Contrast with black1.14:1WCAG normal text: Fail
Greyscale equivalent#070707
Inverted#FFFEAA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001857no red cones; affects about 1% of men; ΔE 16.7 from the original
Deuteranopia#000E54no green cones; the most common form, about 1% of men; ΔE 9.6 from the original
Tritanopia#001F2Eno blue cones; rare, and affects men and women equally; ΔE 52.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.49:1WCAG large text: AAA
Contrast with black, large text1.14:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 10.2Navy · ΔE 22.6Indigo · ΔE 23.3Dark slateblue · ΔE 26.6Dark blue · ΔE 27.9Rebecca purple · ΔE 28.2
Nearest named CSS colourMidnight blue (#191970)ΔE 10.19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#555400
Analogous#002C55, #290055
Triadic#550001, #015500
Split complementary#552A00, #2B5500
Tetradic#55002C, #555400, #00552A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2225FF
Lighter +30%#0003EE
Lighter +20%#0002BB
Lighter +10%#000288
Darker −10%#000022
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000155
Less saturated −25%#0B0B4A

Channel breakdown

R0
G1
B85
Red0 (0%)
Green1 (0.4%)
Blue85 (33.3%)
Hue239.29°
Saturation (HSL)100%
Lightness16.67%
Dominant channelBlue
Hex per channelR 00 · G 01 · B 55

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Every value on this page was computed from “hex 000155” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.