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Recognised as Colour

#013B8D

  • #013B8D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#013B8D is a blue with RGB values 1, 59, 141 and HSL 215°, 99%, 28%. It is a dark colour, so white text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#013B8D#013B8D
HEX#013B8D
RGBrgb(1, 59, 141)
RGB (0–1)0.0039, 0.2314, 0.5529
RGB percentages0.4%, 23.1%, 55.3%
HSLhsl(215.1, 98.6%, 27.8%)
HSV / HSBhsv(215.1, 99.3%, 55.3%)
CMYK99.3%, 58.2%, 0%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer80,781
CSS custom property--colour: #013B8D;

Brightness & contrast

Relative luminance0.05057WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.44:1
Contrast with white10.44:1WCAG normal text: AAA
Contrast with black2.01:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#FEC472

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004690no red cones; affects about 1% of men; ΔE 8.3 from the original
Deuteranopia#003A8Bno green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#00505Eno blue cones; rare, and affects men and women equally; ΔE 49.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.44:1WCAG large text: AAA
Contrast with black, large text2.01:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.6Midnight blue · ΔE 17.3Rebecca purple · ΔE 25.4Slate blue · ΔE 26.8Royal blue · ΔE 27.2Medium purple · ΔE 33.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.64, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D5301
Analogous#01818D, #0D018D
Triadic#8D013B, #3B8D01
Split complementary#8D0D01, #818D01
Tetradic#8D0181, #8D5301, #018D0D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5C9FFE
Lighter +30%#2A81FD
Lighter +20%#0265F2
Lighter +10%#0150C0
Darker −10%#01265A
Darker −20%#001128
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003B8E
Less saturated −25%#133E7B

Channel breakdown

R1
G59
B141
Red1 (0.4%)
Green59 (23.1%)
Blue141 (55.3%)
Hue215.14°
Saturation (HSL)98.59%
Lightness27.84%
Dominant channelBlue
Hex per channelR 01 · G 3B · B 8D

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Every value on this page was computed from “013b8d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.