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Recognised as Colour

#133EA4

  • #133EA4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#133EA4 is a blue with RGB values 19, 62, 164 and HSL 222°, 79%, 36%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#133EA4#133EA4
HEX#133EA4
RGBrgb(19, 62, 164)
RGB (0–1)0.0745, 0.2431, 0.6431
RGB percentages7.5%, 24.3%, 64.3%
HSLhsl(222.2, 79.2%, 35.9%)
HSV / HSBhsv(222.2, 88.4%, 64.3%)
CMYK88.4%, 62.2%, 0%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,261,220
CSS custom property--colour: #133EA4;

Brightness & contrast

Relative luminance0.06264WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.32:1
Contrast with white9.32:1WCAG normal text: AAA
Contrast with black2.25:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#ECC15B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004EA7no red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#0040A2no green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#00596Bno blue cones; rare, and affects men and women equally; ΔE 59.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.32:1WCAG large text: AAA
Contrast with black, large text2.25:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.6Midnight blue · ΔE 17.6Slate blue · ΔE 17.9Royal blue · ΔE 18.9Rebecca purple · ΔE 20.1Medium slateblue · ΔE 27.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.65, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A47913
Analogous#1386A4, #3113A4
Triadic#A4133E, #3EA413
Split complementary#A43013, #87A413
Tetradic#A41386, #A47913, #13A430

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#91AEF2
Lighter +30%#638CED
Lighter +20%#356AE8
Lighter +10%#184FD2
Darker −10%#0E2D76
Darker −20%#081B49
Darker −30%#030A1B
Darker −40%#000000
More saturated +25%#0036B7
Less saturated −25%#2A478D

Channel breakdown

R19
G62
B164
Red19 (7.5%)
Green62 (24.3%)
Blue164 (64.3%)
Hue222.21°
Saturation (HSL)79.23%
Lightness35.88%
Dominant channelBlue
Hex per channelR 13 · G 3E · B A4

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Every value on this page was computed from “133ea4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.