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Recognised as Colour

#2F4790

  • #2F4790
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2F4790 is a blue with RGB values 47, 71, 144 and HSL 225°, 51%, 37%. It is a dark colour, so white text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2F4790#2F4790
HEX#2F4790
RGBrgb(47, 71, 144)
RGB (0–1)0.1843, 0.2784, 0.5647
RGB percentages18.4%, 27.8%, 56.5%
HSLhsl(225.2, 50.8%, 37.5%)
HSV / HSBhsv(225.2, 67.4%, 56.5%)
CMYK67.4%, 50.7%, 0%, 43.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,098,512
CSS custom property--colour: #2F4790;

Brightness & contrast

Relative luminance0.07124WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.66:1
Contrast with white8.66:1WCAG normal text: AAA
Contrast with black2.42:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#D0B86F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1F5093no red cones; affects about 1% of men; ΔE 7.8 from the original
Deuteranopia#04478Fno green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#005864no blue cones; rare, and affects men and women equally; ΔE 45.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.66:1WCAG large text: AAA
Contrast with black, large text2.42:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 10.2Midnight blue · ΔE 23.5Rebecca purple · ΔE 27.2Slate blue · ΔE 28.1Royal blue · ΔE 29Steel blue · ΔE 30.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 10.24, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#90782F
Analogous#2F7890, #472F90
Triadic#902F47, #47902F
Split complementary#90482F, #78902F
Tetradic#902F78, #90782F, #2F9048

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8B7E3
Lighter +30%#8297D6
Lighter +20%#5B77CA
Lighter +10%#3C5AB6
Darker −10%#22346A
Darker −20%#162143
Darker −30%#090E1D
Darker −40%#000000
More saturated +25%#173BA8
Less saturated −25%#475378

Channel breakdown

R47
G71
B144
Red47 (18.4%)
Green71 (27.8%)
Blue144 (56.5%)
Hue225.15°
Saturation (HSL)50.79%
Lightness37.45%
Dominant channelBlue
Hex per channelR 2F · G 47 · B 90

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Every value on this page was computed from “2f4790” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.