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Recognised as Colour

#231F46

  • #231F46
  • Blue
  • Dark
  • Nearest: Dark slateblue

#231F46 is a blue with RGB values 35, 31, 70 and HSL 246°, 39%, 20%. It is a dark colour, so white text on it reaches 15.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#231F46#231F46
HEX#231F46
RGBrgb(35, 31, 70)
RGB (0–1)0.1373, 0.1216, 0.2745
RGB percentages13.7%, 12.2%, 27.5%
HSLhsl(246.2, 38.6%, 19.8%)
HSV / HSBhsv(246.2, 55.7%, 27.5%)
CMYK50%, 55.7%, 0%, 72.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,301,766
CSS custom property--colour: #231F46;

Brightness & contrast

Relative luminance0.01779WCAG 2.x, 0 is black and 1 is white
Perceived brightness38.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.49:1
Contrast with white15.49:1WCAG normal text: AAA
Contrast with black1.36:1WCAG normal text: Fail
Greyscale equivalent#232323
Inverted#DCE0B9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0E2547no red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#0D2345no green cones; the most common form, about 1% of men; ΔE 8.6 from the original
Tritanopia#18272Fno blue cones; rare, and affects men and women equally; ΔE 24.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.49:1WCAG large text: AAA
Contrast with black, large text1.36:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.4Black · ΔE 31.1Midnight blue · ΔE 31.3Dark slate grey · ΔE 36.8Dim grey · ΔE 40.9Rebecca purple · ΔE 41.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#42461F
Analogous#1F2E46, #371F46
Triadic#46231F, #1F4623
Split complementary#46361F, #2F461F
Tetradic#461F2E, #42461F, #1F4637

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7971C0
Lighter +30%#584EB0
Lighter +20%#463E8D
Lighter +10%#352F69
Darker −10%#110F23
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#191253
Less saturated −25%#2D2C39

Channel breakdown

R35
G31
B70
Red35 (13.7%)
Green31 (12.2%)
Blue70 (27.5%)
Hue246.15°
Saturation (HSL)38.61%
Lightness19.8%
Dominant channelBlue
Hex per channelR 23 · G 1F · B 46

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Every value on this page was computed from “231f46” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.