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Recognised as Colour

#311A48

  • #311A48
  • Violet
  • Dark
  • Nearest: Dark slateblue

#311A48 is a violet with RGB values 49, 26, 72 and HSL 270°, 47%, 19%. It is a dark colour, so white text on it reaches 15.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#311A48#311A48
HEX#311A48
RGBrgb(49, 26, 72)
RGB (0–1)0.1922, 0.102, 0.2824
RGB percentages19.2%, 10.2%, 28.2%
HSLhsl(270, 46.9%, 19.2%)
HSV / HSBhsv(270, 63.9%, 28.2%)
CMYK31.9%, 63.9%, 0%, 71.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,217,992
CSS custom property--colour: #311A48;

Brightness & contrast

Relative luminance0.0186WCAG 2.x, 0 is black and 1 is white
Perceived brightness41.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.31:1
Contrast with white15.31:1WCAG normal text: AAA
Contrast with black1.37:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#CEE5B7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#07254Ano red cones; affects about 1% of men; ΔE 17 from the original
Deuteranopia#112547no green cones; the most common form, about 1% of men; ΔE 16.7 from the original
Tritanopia#2D232Eno 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 text15.31:1WCAG large text: AAA
Contrast with black, large text1.37:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 24.1Midnight blue · ΔE 26.9Rebecca purple · ΔE 35.7Black · ΔE 36.1Purple · ΔE 41.6Indigo · ΔE 41.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.15, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#31481A
Analogous#1A1A48, #481A48
Triadic#48311A, #1A4831
Split complementary#48481A, #1A481A
Tetradic#481A1A, #31481A, #1A4848

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9766C8
Lighter +30%#7E43B8
Lighter +20%#643593
Lighter +10%#4B286D
Darker −10%#170C23
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#310E54
Less saturated −25%#31263C

Channel breakdown

R49
G26
B72
Red49 (19.2%)
Green26 (10.2%)
Blue72 (28.2%)
Hue270°
Saturation (HSL)46.94%
Lightness19.22%
Dominant channelBlue
Hex per channelR 31 · G 1A · B 48

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Every value on this page was computed from “311a48” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.