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Colour

#18004F

  • #18004F
  • Violet
  • Dark
  • Nearest: Midnight blue

#18004F is a violet with RGB values 24, 0, 79 and HSL 258°, 100%, 15%. It is a dark colour, so white text on it reaches 18.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#18004F#18004F
HEX#18004F
RGBrgb(24, 0, 79)
RGB (0–1)0.0941, 0, 0.3098
RGB percentages9.4%, 0%, 31%
HSLhsl(258.2, 100%, 15.5%)
HSV / HSBhsv(258.2, 100%, 31%)
CMYK69.6%, 100%, 0%, 69%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,572,943
CSS custom property--colour: #18004F;

Brightness & contrast

Relative luminance0.00759WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.23:1
Contrast with white18.23:1WCAG normal text: AAA
Contrast with black1.15:1WCAG normal text: Fail
Greyscale equivalent#0B0B0B
Inverted#E7FFB0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001751no red cones; affects about 1% of men; ΔE 17.2 from the original
Deuteranopia#00124Eno green cones; the most common form, about 1% of men; ΔE 14.3 from the original
Tritanopia#001B2Bno blue cones; rare, and affects men and women equally; ΔE 47.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.23:1WCAG large text: AAA
Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.8Indigo · ΔE 24.5Dark slateblue · ΔE 25.4Navy · ΔE 26.6Rebecca purple · ΔE 27.8Dark blue · ΔE 31.8
Nearest named CSS colourMidnight blue (#191970)ΔE 11.84, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#374F00
Analogous#000F4F, #40004F
Triadic#4F1800, #004F18
Split complementary#4F3F00, #104F00
Tetradic#4F000F, #374F00, #004F40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#611CFF
Lighter +30%#4600E8
Lighter +20%#3700B5
Lighter +10%#270082
Darker −10%#09001C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#18004F
Less saturated −25%#1C0A45

Channel breakdown

R24
G0
B79
Red24 (9.4%)
Green0 (0%)
Blue79 (31%)
Hue258.23°
Saturation (HSL)100%
Lightness15.49%
Dominant channelBlue
Hex per channelR 18 · G 00 · B 4F

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Every value on this page was computed from “18004f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.