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Recognised as Colour

#04318B

  • #04318B
  • Blue
  • Dark
  • Nearest: Midnight blue

#04318B is a blue with RGB values 4, 49, 139 and HSL 220°, 94%, 28%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#04318B#04318B
HEX#04318B
RGBrgb(4, 49, 139)
RGB (0–1)0.0157, 0.1922, 0.5451
RGB percentages1.6%, 19.2%, 54.5%
HSLhsl(220, 94.4%, 28%)
HSV / HSBhsv(220, 97.1%, 54.5%)
CMYK97.1%, 64.7%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer274,827
CSS custom property--colour: #04318B;

Brightness & contrast

Relative luminance0.04087WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.56:1
Contrast with white11.56:1WCAG normal text: AAA
Contrast with black1.82:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#FBCE74

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003F8Eno red cones; affects about 1% of men; ΔE 11 from the original
Deuteranopia#003389no green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#004959no blue cones; rare, and affects men and women equally; ΔE 54.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.56:1WCAG large text: AAA
Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.4Dark slateblue · ΔE 13.3Rebecca purple · ΔE 21.2Slate blue · ΔE 24.6Royal blue · ΔE 26.7Indigo · ΔE 27.2
Nearest named CSS colourMidnight blue (#191970)ΔE 11.37, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B5E04
Analogous#04758B, #1B048B
Triadic#8B0431, #318B04
Split complementary#8B1B04, #748B04
Tetradic#8B0474, #8B5E04, #048B1A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6194FA
Lighter +30%#2F72F9
Lighter +20%#0754EE
Lighter +10%#0542BD
Darker −10%#032059
Darker −20%#010E28
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00308F
Less saturated −25%#163779

Channel breakdown

R4
G49
B139
Red4 (1.6%)
Green49 (19.2%)
Blue139 (54.5%)
Hue220°
Saturation (HSL)94.41%
Lightness28.04%
Dominant channelBlue
Hex per channelR 04 · G 31 · B 8B

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Every value on this page was computed from “04318b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.