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Colour

#00348B

  • #00348B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#00348B is a blue with RGB values 0, 52, 139 and HSL 218°, 100%, 27%. It is a dark colour, so white text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00348B#00348B
HEX#00348B
RGBrgb(0, 52, 139)
RGB (0–1)0, 0.2039, 0.5451
RGB percentages0%, 20.4%, 54.5%
HSLhsl(217.6, 100%, 27.3%)
HSV / HSBhsv(217.6, 100%, 54.5%)
CMYK100%, 62.6%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,451
CSS custom property--colour: #00348B;

Brightness & contrast

Relative luminance0.0432WCAG 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 11.27:1
Contrast with white11.27:1WCAG normal text: AAA
Contrast with black1.86:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#FFCB74

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00418Eno red cones; affects about 1% of men; ΔE 10.1 from the original
Deuteranopia#003589no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#004B5Ano blue cones; rare, and affects men and women equally; ΔE 52.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.27:1WCAG large text: AAA
Contrast with black, large text1.86:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.4Midnight blue · ΔE 13.1Rebecca purple · ΔE 22.6Slate blue · ΔE 25.4Royal blue · ΔE 26.8Indigo · ΔE 29.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B5700
Analogous#00798B, #12008B
Triadic#8B0034, #348B00
Split complementary#8B1200, #798B00
Tetradic#8B0079, #8B5700, #008B12

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5896FF
Lighter +30%#2577FF
Lighter +20%#005AF1
Lighter +10%#0047BE
Darker −10%#002158
Darker −20%#000E25
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00348B
Less saturated −25%#11387A

Channel breakdown

R0
G52
B139
Red0 (0%)
Green52 (20.4%)
Blue139 (54.5%)
Hue217.55°
Saturation (HSL)100%
Lightness27.25%
Dominant channelBlue
Hex per channelR 00 · G 34 · B 8B

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Every value on this page was computed from “00348b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.