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Colour

#370C40

  • #370C40
  • Violet
  • Dark
  • Nearest: Dark slateblue

#370C40 is a violet with RGB values 55, 12, 64 and HSL 290°, 68%, 15%. It is a dark colour, so white text on it reaches 16.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#370C40#370C40
HEX#370C40
RGBrgb(55, 12, 64)
RGB (0–1)0.2157, 0.0471, 0.251
RGB percentages21.6%, 4.7%, 25.1%
HSLhsl(289.6, 68.4%, 14.9%)
HSV / HSBhsv(289.6, 81.3%, 25.1%)
CMYK14.1%, 81.2%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,607,616
CSS custom property--colour: #370C40;

Brightness & contrast

Relative luminance0.01445WCAG 2.x, 0 is black and 1 is white
Perceived brightness38.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.29:1
Contrast with white16.29:1WCAG normal text: AAA
Contrast with black1.29:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#C8F3BF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001D41no red cones; affects about 1% of men; ΔE 23.7 from the original
Deuteranopia#11223Fno green cones; the most common form, about 1% of men; ΔE 25.4 from the original
Tritanopia#371625no blue cones; rare, and affects men and women equally; ΔE 23 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.29:1WCAG large text: AAA
Contrast with black, large text1.29:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27Midnight blue · ΔE 27.1Rebecca purple · ΔE 34.6Purple · ΔE 36.9Indigo · ΔE 38.6Black · ΔE 39.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 26.95, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#15400C
Analogous#1D0C40, #400C2F
Triadic#40370C, #0C4037
Split complementary#2F400C, #0C401D
Tetradic#401D0C, #15400C, #0C2F40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BF3DDB
Lighter +30%#A624C1
Lighter +20%#811C96
Lighter +10%#5C146B
Darker −10%#120415
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#3D024A
Less saturated −25%#311637

Channel breakdown

R55
G12
B64
Red55 (21.6%)
Green12 (4.7%)
Blue64 (25.1%)
Hue289.62°
Saturation (HSL)68.42%
Lightness14.9%
Dominant channelBlue
Hex per channelR 37 · G 0C · B 40

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Every value on this page was computed from “370c40” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.