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Recognised as Colour

#310F40

  • #310F40
  • Violet
  • Dark
  • Nearest: Dark slateblue

#310F40 is a violet with RGB values 49, 15, 64 and HSL 282°, 62%, 15%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#310F40#310F40
HEX#310F40
RGBrgb(49, 15, 64)
RGB (0–1)0.1922, 0.0588, 0.251
RGB percentages19.2%, 5.9%, 25.1%
HSLhsl(281.6, 62%, 15.5%)
HSV / HSBhsv(281.6, 76.6%, 25.1%)
CMYK23.4%, 76.6%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,215,168
CSS custom property--colour: #310F40;

Brightness & contrast

Relative luminance0.01365WCAG 2.x, 0 is black and 1 is white
Perceived brightness36.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.5:1
Contrast with white16.5:1WCAG normal text: AAA
Contrast with black1.27:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#CEF0BF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001D41no red cones; affects about 1% of men; ΔE 20.5 from the original
Deuteranopia#0C203Fno green cones; the most common form, about 1% of men; ΔE 21.8 from the original
Tritanopia#301926no blue cones; rare, and affects men and women equally; ΔE 23.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.5:1WCAG large text: AAA
Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 26.5Midnight blue · ΔE 26.7Rebecca purple · ΔE 35.6Black · ΔE 37.4Purple · ΔE 39.3Indigo · ΔE 39.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 26.47, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1E400F
Analogous#190F40, #400F36
Triadic#40310F, #0F4031
Split complementary#36400F, #0F4019
Tetradic#40190F, #1E400F, #0F3640

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A947D4
Lighter +30%#902CBC
Lighter +20%#702293
Lighter +10%#511969
Darker −10%#110517
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#35054A
Less saturated −25%#2D1936

Channel breakdown

R49
G15
B64
Red49 (19.2%)
Green15 (5.9%)
Blue64 (25.1%)
Hue281.63°
Saturation (HSL)62.03%
Lightness15.49%
Dominant channelBlue
Hex per channelR 31 · G 0F · B 40

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Every value on this page was computed from “310f40” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.