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Recognised as Colour

#004183

  • #004183
  • Blue
  • Dark
  • Nearest: Dark slateblue

#004183 is a blue with RGB values 0, 65, 131 and HSL 210°, 100%, 26%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#004183#004183
HEX#004183
RGBrgb(0, 65, 131)
RGB (0–1)0, 0.2549, 0.5137
RGB percentages0%, 25.5%, 51.4%
HSLhsl(210.2, 100%, 25.7%)
HSV / HSBhsv(210.2, 100%, 51.4%)
CMYK100%, 50.4%, 0%, 48.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,771
CSS custom property--colour: #004183;

Brightness & contrast

Relative luminance0.05419WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.08:1
Contrast with white10.08:1WCAG normal text: AAA
Contrast with black2.08:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#FFBE7C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#184885no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#003D82no green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#00515Bno blue cones; rare, and affects men and women equally; ΔE 40.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.08:1WCAG large text: AAA
Contrast with black, large text2.08:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.6Midnight blue · ΔE 26.2Steel blue · ΔE 29.8Rebecca purple · ΔE 33.9Royal blue · ΔE 34.8Cornflower blue · ΔE 34.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.59, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#834200
Analogous#008283, #010083
Triadic#830041, #418300
Split complementary#830100, #828300
Tetradic#830082, #834200, #008301

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#50A7FF
Lighter +30%#1D8DFF
Lighter +20%#0074E9
Lighter +10%#005AB6
Darker −10%#002850
Darker −20%#000E1D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004183
Less saturated −25%#104173

Channel breakdown

R0
G65
B131
Red0 (0%)
Green65 (25.5%)
Blue131 (51.4%)
Hue210.23°
Saturation (HSL)100%
Lightness25.69%
Dominant channelBlue
Hex per channelR 00 · G 41 · B 83

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Every value on this page was computed from “hex 004183” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.