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Recognised as Colour

#003766

  • #003766
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003766 is a blue with RGB values 0, 55, 102 and HSL 208°, 100%, 20%. It is a dark colour, so white text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003766#003766
HEX#003766
RGBrgb(0, 55, 102)
RGB (0–1)0, 0.2157, 0.4
RGB percentages0%, 21.6%, 40%
HSLhsl(207.6, 100%, 20%)
HSV / HSBhsv(207.6, 100%, 40%)
CMYK100%, 46.1%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,182
CSS custom property--colour: #003766;

Brightness & contrast

Relative luminance0.03692WCAG 2.x, 0 is black and 1 is white
Perceived brightness54.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.08:1
Contrast with white12.08:1WCAG normal text: AAA
Contrast with black1.74:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#FFC899

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1E3B68no red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#093265no green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#004249no blue cones; rare, and affects men and women equally; ΔE 29.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.08:1WCAG large text: AAA
Contrast with black, large text1.74:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25.6Steel blue · ΔE 30.9Midnight blue · ΔE 33.5Dark slate grey · ΔE 33.5Slate grey · ΔE 37.6Dim grey · ΔE 39
Nearest named CSS colourDark slateblue (#483D8B)ΔE 25.61, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#662F00
Analogous#006662, #000466
Triadic#660037, #376600
Split complementary#660004, #666200
Tetradic#620066, #662F00, #046600

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#33A1FF
Lighter +30%#008AFF
Lighter +20%#006ECC
Lighter +10%#005399
Darker −10%#001C33
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003766
Less saturated −25%#0D3659

Channel breakdown

R0
G55
B102
Red0 (0%)
Green55 (21.6%)
Blue102 (40%)
Hue207.65°
Saturation (HSL)100%
Lightness20%
Dominant channelBlue
Hex per channelR 00 · G 37 · B 66

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Every value on this page was computed from “hex 003766” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.