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Recognised as Colour

#004066

  • #004066
  • Blue
  • Dark
  • Nearest: Dark slate grey

#004066 is a blue with RGB values 0, 64, 102 and HSL 202°, 100%, 20%. It is a dark colour, so white text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#004066#004066
HEX#004066
RGBrgb(0, 64, 102)
RGB (0–1)0, 0.251, 0.4
RGB percentages0%, 25.1%, 40%
HSLhsl(202.4, 100%, 20%)
HSV / HSBhsv(202.4, 100%, 40%)
CMYK100%, 37.3%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,486
CSS custom property--colour: #004066;

Brightness & contrast

Relative luminance0.04626WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.91:1
Contrast with white10.91:1WCAG normal text: AAA
Contrast with black1.93:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#FFBF99

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D4168no red cones; affects about 1% of men; ΔE 7.6 from the original
Deuteranopia#1F3965no green cones; the most common form, about 1% of men; ΔE 8.6 from the original
Tritanopia#00494Eno blue cones; rare, and affects men and women equally; ΔE 24.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.91:1WCAG large text: AAA
Contrast with black, large text1.93:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 26Steel blue · ΔE 27.3Slate grey · ΔE 31.9Dark slateblue · ΔE 32.4Dim grey · ΔE 33.2Light slate grey · ΔE 34.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 25.99, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#662600
Analogous#006659, #000D66
Triadic#660040, #406600
Split complementary#66000D, #665900
Tetradic#590066, #662600, #0D6600

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#33B3FF
Lighter +30%#00A0FF
Lighter +20%#0080CC
Lighter +10%#006099
Darker −10%#002033
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004066
Less saturated −25%#0D3D59

Channel breakdown

R0
G64
B102
Red0 (0%)
Green64 (25.1%)
Blue102 (40%)
Hue202.35°
Saturation (HSL)100%
Lightness20%
Dominant channelBlue
Hex per channelR 00 · G 40 · B 66

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Every value on this page was computed from “hex 004066” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.