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Recognised as Colour

#13397D

  • #13397D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#13397D is a blue with RGB values 19, 57, 125 and HSL 218°, 74%, 28%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#13397D#13397D
HEX#13397D
RGBrgb(19, 57, 125)
RGB (0–1)0.0745, 0.2235, 0.4902
RGB percentages7.5%, 22.4%, 49%
HSLhsl(218.5, 73.6%, 28.2%)
HSV / HSBhsv(218.5, 84.8%, 49%)
CMYK84.8%, 54.4%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,259,901
CSS custom property--colour: #13397D;

Brightness & contrast

Relative luminance0.04545WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11:1
Contrast with white11:1WCAG normal text: AAA
Contrast with black1.91:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#ECC682

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#07417Fno red cones; affects about 1% of men; ΔE 6.7 from the original
Deuteranopia#00387Cno green cones; the most common form, about 1% of men; ΔE 1.6 from the original
Tritanopia#004A55no blue cones; rare, and affects men and women equally; ΔE 42.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11:1WCAG large text: AAA
Contrast with black, large text1.91:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.1Midnight blue · ΔE 21.3Rebecca purple · ΔE 30.1Slate blue · ΔE 33.4Steel blue · ΔE 34.2Royal blue · ΔE 34.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D5713
Analogous#136E7D, #22137D
Triadic#7D1339, #397D13
Split complementary#7D2213, #6E7D13
Tetradic#7D136E, #7D5713, #137D22

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#729DEA
Lighter +30%#467EE3
Lighter +20%#2061D6
Lighter +10%#1A4DA9
Darker −10%#0C2551
Darker −20%#061124
Darker −30%#000000
Darker −40%#000000
More saturated +25%#01348F
Less saturated −25%#253E6B

Channel breakdown

R19
G57
B125
Red19 (7.5%)
Green57 (22.4%)
Blue125 (49%)
Hue218.49°
Saturation (HSL)73.61%
Lightness28.24%
Dominant channelBlue
Hex per channelR 13 · G 39 · B 7D

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Every value on this page was computed from “13397d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.