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Recognised as Colour

#2F538F

  • #2F538F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2F538F is a blue with RGB values 47, 83, 143 and HSL 218°, 51%, 37%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2F538F#2F538F
HEX#2F538F
RGBrgb(47, 83, 143)
RGB (0–1)0.1843, 0.3255, 0.5608
RGB percentages18.4%, 32.5%, 56.1%
HSLhsl(217.5, 50.5%, 37.3%)
HSV / HSBhsv(217.5, 67.1%, 56.1%)
CMYK67.1%, 42%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,101,583
CSS custom property--colour: #2F538F;

Brightness & contrast

Relative luminance0.08774WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.62:1
Contrast with white7.62:1WCAG normal text: AAA
Contrast with black2.75:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#D0AC70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#385891no red cones; affects about 1% of men; ΔE 3 from the original
Deuteranopia#294F8Eno green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#00616Ano blue cones; rare, and affects men and women equally; ΔE 37.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.62:1WCAG large text: AAA
Contrast with black, large text2.75:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.7Steel blue · ΔE 21.1Cornflower blue · ΔE 29.1Slate grey · ΔE 33.1Midnight blue · ΔE 33.6Light slate grey · ΔE 34.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F6B2F
Analogous#2F838F, #3B2F8F
Triadic#8F2F53, #538F2F
Split complementary#8F3B2F, #838F2F
Tetradic#8F2F83, #8F6B2F, #2F8F3B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8BEE2
Lighter +30%#81A1D6
Lighter +20%#5B84C9
Lighter +10%#3C69B5
Darker −10%#223D69
Darker −20%#162642
Darker −30%#09101C
Darker −40%#000000
More saturated +25%#174DA7
Less saturated −25%#475977

Channel breakdown

R47
G83
B143
Red47 (18.4%)
Green83 (32.5%)
Blue143 (56.1%)
Hue217.5°
Saturation (HSL)50.53%
Lightness37.25%
Dominant channelBlue
Hex per channelR 2F · G 53 · B 8F

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Every value on this page was computed from “2f538f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.