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Colour

#2F3A71

  • #2F3A71
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2F3A71 is a blue with RGB values 47, 58, 113 and HSL 230°, 41%, 31%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2F3A71#2F3A71
HEX#2F3A71
RGBrgb(47, 58, 113)
RGB (0–1)0.1843, 0.2275, 0.4431
RGB percentages18.4%, 22.7%, 44.3%
HSLhsl(230, 41.3%, 31.4%)
HSV / HSBhsv(230, 58.4%, 44.3%)
CMYK58.4%, 48.7%, 0%, 55.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,095,153
CSS custom property--colour: #2F3A71;

Brightness & contrast

Relative luminance0.04823WCAG 2.x, 0 is black and 1 is white
Perceived brightness64 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.69:1
Contrast with white10.69:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#D0C58E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#214173no red cones; affects about 1% of men; ΔE 7.2 from the original
Deuteranopia#183B70no green cones; the most common form, about 1% of men; ΔE 5.6 from the original
Tritanopia#0A4650no blue cones; rare, and affects men and women equally; ΔE 35.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.69:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.1Midnight blue · ΔE 26.7Steel blue · ΔE 31.5Rebecca purple · ΔE 33.3Slate grey · ΔE 38.3Slate blue · ΔE 38.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.14, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#71662F
Analogous#2F5B71, #452F71
Triadic#712F3A, #3A712F
Split complementary#71452F, #5B712F
Tetradic#712F5B, #71662F, #2F7145

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#98A2D4
Lighter +30%#7481C5
Lighter +20%#5061B6
Lighter +10%#3E4C95
Darker −10%#20284D
Darker −20%#111529
Darker −30%#020305
Darker −40%#000000
More saturated +25%#1B2D85
Less saturated −25%#43475D

Channel breakdown

R47
G58
B113
Red47 (18.4%)
Green58 (22.7%)
Blue113 (44.3%)
Hue230°
Saturation (HSL)41.25%
Lightness31.37%
Dominant channelBlue
Hex per channelR 2F · G 3A · B 71

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Every value on this page was computed from “2f3a71” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.