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Colour

#01005B

  • #01005B
  • Blue
  • Dark
  • Nearest: Midnight blue

#01005B is a blue with RGB values 1, 0, 91 and HSL 241°, 100%, 18%. It is a dark colour, so white text on it reaches 18.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#01005B#01005B
HEX#01005B
RGBrgb(1, 0, 91)
RGB (0–1)0.0039, 0, 0.3569
RGB percentages0.4%, 0%, 35.7%
HSLhsl(240.7, 100%, 17.8%)
HSV / HSBhsv(240.7, 100%, 35.7%)
CMYK98.9%, 100%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer65,627
CSS custom property--colour: #01005B;

Brightness & contrast

Relative luminance0.00762WCAG 2.x, 0 is black and 1 is white
Perceived brightness30.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.22:1
Contrast with white18.22:1WCAG normal text: AAA
Contrast with black1.15:1WCAG normal text: Fail
Greyscale equivalent#070707
Inverted#FEFFA4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001A5Dno red cones; affects about 1% of men; ΔE 18.7 from the original
Deuteranopia#00105Ano green cones; the most common form, about 1% of men; ΔE 11.7 from the original
Tritanopia#002132no blue cones; rare, and affects men and women equally; ΔE 55.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text18.22:1WCAG large text: AAA
Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 10.5Navy · ΔE 18.5Indigo · ΔE 20.1Dark blue · ΔE 23.8Rebecca purple · ΔE 26.9Dark slateblue · ΔE 27.7
Nearest named CSS colourMidnight blue (#191970)ΔE 10.52, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A5B00
Analogous#002D5B, #2E005B
Triadic#5B0100, #005B01
Split complementary#5B2F00, #2C5B00
Tetradic#5B002D, #5A5B00, #005B2F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2A28FF
Lighter +30%#0300F4
Lighter +20%#0200C1
Lighter +10%#02008E
Darker −10%#000028
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#01005B
Less saturated −25%#0C0B50

Channel breakdown

R1
G0
B91
Red1 (0.4%)
Green0 (0%)
Blue91 (35.7%)
Hue240.66°
Saturation (HSL)100%
Lightness17.84%
Dominant channelBlue
Hex per channelR 01 · G 00 · B 5B

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Every value on this page was computed from “01005b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.