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Recognised as Colour

#03348B

  • #03348B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#03348B is a blue with RGB values 3, 52, 139 and HSL 218°, 96%, 28%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#03348B#03348B
HEX#03348B
RGBrgb(3, 52, 139)
RGB (0–1)0.0118, 0.2039, 0.5451
RGB percentages1.2%, 20.4%, 54.5%
HSLhsl(218.4, 95.8%, 27.8%)
HSV / HSBhsv(218.4, 97.8%, 54.5%)
CMYK97.8%, 62.6%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer210,059
CSS custom property--colour: #03348B;

Brightness & contrast

Relative luminance0.04339WCAG 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 11.24:1
Contrast with white11.24:1WCAG normal text: AAA
Contrast with black1.87:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#FCCB74

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 2.2 from the original
Tritanopia#004B5Ano blue cones; rare, and affects men and women equally; ΔE 52.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.24:1WCAG large text: AAA
Contrast with black, large text1.87:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.2Midnight blue · ΔE 13Rebecca purple · ΔE 22.5Slate blue · ΔE 25.2Royal blue · ΔE 26.8Indigo · ΔE 29.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.23, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B5A03
Analogous#03788B, #16038B
Triadic#8B0334, #348B03
Split complementary#8B1603, #788B03
Tetradic#8B0378, #8B5A03, #038B16

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5E97FC
Lighter +30%#2D77FA
Lighter +20%#0559EF
Lighter +10%#0447BD
Darker −10%#022159
Darker −20%#010F27
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00338E
Less saturated −25%#153979

Channel breakdown

R3
G52
B139
Red3 (1.2%)
Green52 (20.4%)
Blue139 (54.5%)
Hue218.38°
Saturation (HSL)95.77%
Lightness27.84%
Dominant channelBlue
Hex per channelR 03 · G 34 · B 8B

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Every value on this page was computed from “03348b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.