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Recognised as Colour

#01478D

  • #01478D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#01478D is a blue with RGB values 1, 71, 141 and HSL 210°, 99%, 28%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#01478D#01478D
HEX#01478D
RGBrgb(1, 71, 141)
RGB (0–1)0.0039, 0.2784, 0.5529
RGB percentages0.4%, 27.8%, 55.3%
HSLhsl(210, 98.6%, 27.8%)
HSV / HSBhsv(210, 99.3%, 55.3%)
CMYK99.3%, 49.6%, 0%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer83,853
CSS custom property--colour: #01478D;

Brightness & contrast

Relative luminance0.06436WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.18:1
Contrast with white9.18:1WCAG normal text: AAA
Contrast with black2.29:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#FEB872

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1C4E90no red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#00428Cno green cones; the most common form, about 1% of men; ΔE 3.9 from the original
Tritanopia#005863no blue cones; rare, and affects men and women equally; ΔE 42.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.18:1WCAG large text: AAA
Contrast with black, large text2.29:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.2Midnight blue · ΔE 26.8Steel blue · ΔE 28.6Cornflower blue · ΔE 31.9Royal blue · ΔE 31.9Slate blue · ΔE 33
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.24, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D4701
Analogous#018D8D, #01018D
Triadic#8D0147, #478D01
Split complementary#8D0101, #8D8D01
Tetradic#8D018D, #8D4701, #018D01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5CADFE
Lighter +30%#2A94FD
Lighter +20%#027AF2
Lighter +10%#0161C0
Darker −10%#012E5A
Darker −20%#001428
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00478E
Less saturated −25%#13477B

Channel breakdown

R1
G71
B141
Red1 (0.4%)
Green71 (27.8%)
Blue141 (55.3%)
Hue210°
Saturation (HSL)98.59%
Lightness27.84%
Dominant channelBlue
Hex per channelR 01 · G 47 · B 8D

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Every value on this page was computed from “01478d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.