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Recognised as Colour

#0343A1

  • #0343A1
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0343A1 is a blue with RGB values 3, 67, 161 and HSL 216°, 96%, 32%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0343A1#0343A1
HEX#0343A1
RGBrgb(3, 67, 161)
RGB (0–1)0.0118, 0.2627, 0.6314
RGB percentages1.2%, 26.3%, 63.1%
HSLhsl(215.7, 96.3%, 32.2%)
HSV / HSBhsv(215.7, 98.1%, 63.1%)
CMYK98.1%, 58.4%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer213,921
CSS custom property--colour: #0343A1;

Brightness & contrast

Relative luminance0.06607WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.05:1
Contrast with white9.05:1WCAG normal text: AAA
Contrast with black2.32:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#FCBC5E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0050A4no red cones; affects about 1% of men; ΔE 9.9 from the original
Deuteranopia#00429Fno green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#005B6Bno blue cones; rare, and affects men and women equally; ΔE 55.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.05:1WCAG large text: AAA
Contrast with black, large text2.32:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.3Midnight blue · ΔE 19.3Royal blue · ΔE 20.2Slate blue · ΔE 20.8Rebecca purple · ΔE 23.3Medium purple · ΔE 29.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A16103
Analogous#0392A1, #1203A1
Triadic#A10343, #43A103
Split complementary#A11203, #92A103
Tetradic#A10392, #A16103, #03A112

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#74ABFC
Lighter +30%#428DFB
Lighter +20%#0F6FFB
Lighter +10%#0458D3
Darker −10%#022E6F
Darker −20%#01193D
Darker −30%#00040B
Darker −40%#000000
More saturated +25%#0042A4
Less saturated −25%#18478C

Channel breakdown

R3
G67
B161
Red3 (1.2%)
Green67 (26.3%)
Blue161 (63.1%)
Hue215.7°
Saturation (HSL)96.34%
Lightness32.16%
Dominant channelBlue
Hex per channelR 03 · G 43 · B A1

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Every value on this page was computed from “0343a1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.