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Recognised as Colour

#31008F

  • #31008F
  • Violet
  • Dark
  • Nearest: Dark blue

#31008F is a violet with RGB values 49, 0, 143 and HSL 261°, 100%, 28%. It is a dark colour, so white text on it reaches 13.8:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#31008F#31008F
HEX#31008F
RGBrgb(49, 0, 143)
RGB (0–1)0.1922, 0, 0.5608
RGB percentages19.2%, 0%, 56.1%
HSLhsl(260.6, 100%, 28%)
HSV / HSBhsv(260.6, 100%, 56.1%)
CMYK65.7%, 100%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,211,407
CSS custom property--colour: #31008F;

Brightness & contrast

Relative luminance0.02636WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.75:1
Contrast with white13.75:1WCAG normal text: AAA
Contrast with black1.53:1WCAG normal text: Fail
Greyscale equivalent#151515
Inverted#CEFF70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003192no red cones; affects about 1% of men; ΔE 27.2 from the original
Deuteranopia#00288Dno green cones; the most common form, about 1% of men; ΔE 22.4 from the original
Tritanopia#003752no blue cones; rare, and affects men and women equally; ΔE 72.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.75:1WCAG large text: AAA
Contrast with black, large text1.53:1WCAG large text: Fail

Named colours

Dark blue · ΔE 5.9Navy · ΔE 7.6Indigo · ΔE 11.7Rebecca purple · ΔE 24.8Midnight blue · ΔE 26.1Dark orchid · ΔE 28.2
Nearest named CSS colourDark blue (#00008B)ΔE 5.87, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E8F00
Analogous#00178F, #78008F
Triadic#8F3100, #008F31
Split complementary#8F7800, #178F00
Tetradic#8F0017, #5E8F00, #008F78

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#945CFF
Lighter +30%#7229FF
Lighter +20%#5400F5
Lighter +10%#4200C2
Darker −10%#20005C
Darker −20%#0E0029
Darker −30%#000000
Darker −40%#000000
More saturated +25%#31008F
Less saturated −25%#37127D

Channel breakdown

R49
G0
B143
Red49 (19.2%)
Green0 (0%)
Blue143 (56.1%)
Hue260.56°
Saturation (HSL)100%
Lightness28.04%
Dominant channelBlue
Hex per channelR 31 · G 00 · B 8F

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Every value on this page was computed from “31008f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.