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Recognised as Colour

#031F4A

  • #031F4A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#031F4A is a blue with RGB values 3, 31, 74 and HSL 216°, 92%, 15%. It is a dark colour, so white text on it reaches 16.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#031F4A#031F4A
HEX#031F4A
RGBrgb(3, 31, 74)
RGB (0–1)0.0118, 0.1216, 0.2902
RGB percentages1.2%, 12.2%, 29%
HSLhsl(216.3, 92.2%, 15.1%)
HSV / HSBhsv(216.3, 95.9%, 29%)
CMYK95.9%, 58.1%, 0%, 71%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer204,618
CSS custom property--colour: #031F4A;

Brightness & contrast

Relative luminance0.01494WCAG 2.x, 0 is black and 1 is white
Perceived brightness34.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.17:1
Contrast with white16.17:1WCAG normal text: AAA
Contrast with black1.3:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#FCE0B5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#02244Cno red cones; affects about 1% of men; ΔE 3.9 from the original
Deuteranopia#001E49no green cones; the most common form, about 1% of men; ΔE 0.6 from the original
Tritanopia#002A31no blue cones; rare, and affects men and women equally; ΔE 29.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.17:1WCAG large text: AAA
Contrast with black, large text1.3:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.8Midnight blue · ΔE 30.3Black · ΔE 33.5Dark slate grey · ΔE 38.2Steel blue · ΔE 42.1Rebecca purple · ΔE 43.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4A2E03
Analogous#03434A, #0A034A
Triadic#4A031F, #1F4A03
Split complementary#4A0B03, #434A03
Tetradic#4A0343, #4A2E03, #034A0B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2376F6
Lighter +30%#095DDD
Lighter +20%#0748AC
Lighter +10%#05347B
Darker −10%#010A19
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001E4D
Less saturated −25%#0D2140

Channel breakdown

R3
G31
B74
Red3 (1.2%)
Green31 (12.2%)
Blue74 (29%)
Hue216.34°
Saturation (HSL)92.21%
Lightness15.1%
Dominant channelBlue
Hex per channelR 03 · G 1F · B 4A

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Every value on this page was computed from “031f4a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.