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Colour

#273C66

  • #273C66
  • Blue
  • Dark
  • Nearest: Dark slateblue

#273C66 is a blue with RGB values 39, 60, 102 and HSL 220°, 45%, 28%. 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 slateblue.

Colour values

#273C66#273C66
HEX#273C66
RGBrgb(39, 60, 102)
RGB (0–1)0.1529, 0.2353, 0.4
RGB percentages15.3%, 23.5%, 40%
HSLhsl(220, 44.7%, 27.6%)
HSV / HSBhsv(220, 61.8%, 40%)
CMYK61.8%, 41.2%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,571,366
CSS custom property--colour: #273C66;

Brightness & contrast

Relative luminance0.04622WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.3 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 black1.92:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#D8C399

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2A4068no red cones; affects about 1% of men; ΔE 2.3 from the original
Deuteranopia#223A65no green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#00454Cno blue cones; rare, and affects men and women equally; ΔE 28.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.91:1WCAG large text: AAA
Contrast with black, large text1.92:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25.5Steel blue · ΔE 29.1Dark slate grey · ΔE 30Slate grey · ΔE 32.9Dim grey · ΔE 33.6Light slate grey · ΔE 35.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 25.48, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#665127
Analogous#275C66, #322766
Triadic#66273C, #3C6627
Split complementary#663227, #5C6627
Tetradic#66275B, #665127, #276631

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#88A0D1
Lighter +30%#6383C3
Lighter +20%#4367B0
Lighter +10%#35528B
Darker −10%#192641
Darker −20%#0B111C
Darker −30%#000000
Darker −40%#000000
More saturated +25%#153678
Less saturated −25%#394254

Channel breakdown

R39
G60
B102
Red39 (15.3%)
Green60 (23.5%)
Blue102 (40%)
Hue220°
Saturation (HSL)44.68%
Lightness27.65%
Dominant channelBlue
Hex per channelR 27 · G 3C · B 66

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Every value on this page was computed from “273c66” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.