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Recognised as Colour

#273FA1

  • #273FA1
  • Blue
  • Dark
  • Nearest: Dark slateblue

#273FA1 is a blue with RGB values 39, 63, 161 and HSL 228°, 61%, 39%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#273FA1#273FA1
HEX#273FA1
RGBrgb(39, 63, 161)
RGB (0–1)0.1529, 0.2471, 0.6314
RGB percentages15.3%, 24.7%, 63.1%
HSLhsl(228.2, 61%, 39.2%)
HSV / HSBhsv(228.2, 75.8%, 63.1%)
CMYK75.8%, 60.9%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,572,193
CSS custom property--colour: #273FA1;

Brightness & contrast

Relative luminance0.0656WCAG 2.x, 0 is black and 1 is white
Perceived brightness75.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.08:1
Contrast with white9.08:1WCAG normal text: AAA
Contrast with black2.31:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#D8C05E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004EA4no red cones; affects about 1% of men; ΔE 12.9 from the original
Deuteranopia#00439Fno green cones; the most common form, about 1% of men; ΔE 6.4 from the original
Tritanopia#00586Ano blue cones; rare, and affects men and women equally; ΔE 57.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.08:1WCAG large text: AAA
Contrast with black, large text2.31:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.6Midnight blue · ΔE 16.9Slate blue · ΔE 17.5Rebecca purple · ΔE 18.5Royal blue · ΔE 19.6Medium purple · ΔE 26.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A18927
Analogous#277CA1, #4C27A1
Triadic#A1273F, #3FA127
Split complementary#A14C27, #7CA127
Tetradic#A1277C, #A18927, #27A14C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AAB6EA
Lighter +30%#8193E0
Lighter +20%#5871D6
Lighter +10%#314FCA
Darker −10%#1D2F78
Darker −20%#131F4F
Darker −30%#090F26
Darker −40%#000000
More saturated +25%#0E30BA
Less saturated −25%#404E88

Channel breakdown

R39
G63
B161
Red39 (15.3%)
Green63 (24.7%)
Blue161 (63.1%)
Hue228.2°
Saturation (HSL)61%
Lightness39.22%
Dominant channelBlue
Hex per channelR 27 · G 3F · B A1

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Every value on this page was computed from “273fa1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.