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Recognised as Colour

#143C8A

  • #143C8A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#143C8A is a blue with RGB values 20, 60, 138 and HSL 220°, 75%, 31%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#143C8A#143C8A
HEX#143C8A
RGBrgb(20, 60, 138)
RGB (0–1)0.0784, 0.2353, 0.5412
RGB percentages7.8%, 23.5%, 54.1%
HSLhsl(219.7, 74.7%, 31%)
HSV / HSBhsv(219.7, 85.5%, 54.1%)
CMYK85.5%, 56.5%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,326,218
CSS custom property--colour: #143C8A;

Brightness & contrast

Relative luminance0.05215WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.28:1
Contrast with white10.28:1WCAG normal text: AAA
Contrast with black2.04:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#EBC375

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00468Dno red cones; affects about 1% of men; ΔE 8 from the original
Deuteranopia#003B88no green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#004F5Dno blue cones; rare, and affects men and women equally; ΔE 46.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.28:1WCAG large text: AAA
Contrast with black, large text2.04:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 10.5Midnight blue · ΔE 18.4Rebecca purple · ΔE 25.9Slate blue · ΔE 27.9Royal blue · ΔE 28.6Medium purple · ΔE 33.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 10.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A6214
Analogous#14778A, #27148A
Triadic#8A143C, #3C8A14
Split complementary#8A2714, #778A14
Tetradic#8A1477, #8A6214, #148A27

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7EA3EC
Lighter +30%#5184E6
Lighter +20%#2564DF
Lighter +10%#1A4FB7
Darker −10%#0E295D
Darker −20%#071531
Darker −30%#010204
Darker −40%#000000
More saturated +25%#00369E
Less saturated −25%#284276

Channel breakdown

R20
G60
B138
Red20 (7.8%)
Green60 (23.5%)
Blue138 (54.1%)
Hue219.66°
Saturation (HSL)74.68%
Lightness30.98%
Dominant channelBlue
Hex per channelR 14 · G 3C · B 8A

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Every value on this page was computed from “143c8a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.