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Colour

#013AB5

  • #013AB5
  • Blue
  • Dark
  • Nearest: Slate blue

#013AB5 is a blue with RGB values 1, 58, 181 and HSL 221°, 99%, 36%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#013AB5#013AB5
HEX#013AB5
RGBrgb(1, 58, 181)
RGB (0–1)0.0039, 0.2275, 0.7098
RGB percentages0.4%, 22.7%, 71%
HSLhsl(221, 98.9%, 35.7%)
HSV / HSBhsv(221, 99.4%, 71%)
CMYK99.4%, 68%, 0%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer80,565
CSS custom property--colour: #013AB5;

Brightness & contrast

Relative luminance0.06369WCAG 2.x, 0 is black and 1 is white
Perceived brightness75.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.24:1
Contrast with white9.24:1WCAG normal text: AAA
Contrast with black2.27:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#FEC54A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FB9no red cones; affects about 1% of men; ΔE 15.6 from the original
Deuteranopia#003FB3no green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#005C72no blue cones; rare, and affects men and women equally; ΔE 70.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.24:1WCAG large text: AAA
Contrast with black, large text2.27:1WCAG large text: Fail

Named colours

Slate blue · ΔE 18.4Royal blue · ΔE 20Navy · ΔE 21.5Dark blue · ΔE 21.7Rebecca purple · ΔE 22.8Medium slateblue · ΔE 22.8
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 18.45, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B57C01
Analogous#0194B5, #2201B5
Triadic#B5013A, #3AB501
Split complementary#B52201, #94B501
Tetradic#B50194, #B57C01, #01B522

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#84ABFE
Lighter +30%#5188FE
Lighter +20%#1E65FE
Lighter +10%#014AE8
Darker −10%#012A82
Darker −20%#001950
Darker −30%#00091D
Darker −40%#000000
More saturated +25%#003AB6
Less saturated −25%#18429E

Channel breakdown

R1
G58
B181
Red1 (0.4%)
Green58 (22.7%)
Blue181 (71%)
Hue221°
Saturation (HSL)98.9%
Lightness35.69%
Dominant channelBlue
Hex per channelR 01 · G 3A · B B5

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Every value on this page was computed from “013ab5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.