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Recognised as Colour

#2F3663

  • #2F3663
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2F3663 is a blue with RGB values 47, 54, 99 and HSL 232°, 36%, 29%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2F3663#2F3663
HEX#2F3663
RGBrgb(47, 54, 99)
RGB (0–1)0.1843, 0.2118, 0.3882
RGB percentages18.4%, 21.2%, 38.8%
HSLhsl(231.9, 35.6%, 28.6%)
HSV / HSBhsv(231.9, 52.5%, 38.8%)
CMYK52.5%, 45.5%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,094,115
CSS custom property--colour: #2F3663;

Brightness & contrast

Relative luminance0.04144WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.48:1
Contrast with white11.48:1WCAG normal text: AAA
Contrast with black1.83:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#D0C99C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#243C65no red cones; affects about 1% of men; ΔE 6.3 from the original
Deuteranopia#1F3762no green cones; the most common form, about 1% of men; ΔE 5 from the original
Tritanopia#1A4047no blue cones; rare, and affects men and women equally; ΔE 29.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.48:1WCAG large text: AAA
Contrast with black, large text1.83:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 21.9Midnight blue · ΔE 31.3Steel blue · ΔE 32.4Dark slate grey · ΔE 33.8Slate grey · ΔE 35.9Dim grey · ΔE 36
Nearest named CSS colourDark slateblue (#483D8B)ΔE 21.88, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#635C2F
Analogous#2F5063, #422F63
Triadic#632F36, #36632F
Split complementary#63422F, #50632F
Tetradic#632F50, #635C2F, #2F6342

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#939ACB
Lighter +30%#707ABB
Lighter +20%#505CA8
Lighter +10%#3F4986
Darker −10%#1F2340
Darker −20%#0E101E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1D2975
Less saturated −25%#414351

Channel breakdown

R47
G54
B99
Red47 (18.4%)
Green54 (21.2%)
Blue99 (38.8%)
Hue231.92°
Saturation (HSL)35.62%
Lightness28.63%
Dominant channelBlue
Hex per channelR 2F · G 36 · B 63

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Every value on this page was computed from “2f3663” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.