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Colour

#18003D

  • #18003D
  • Violet
  • Dark
  • Nearest: Midnight blue

#18003D is a violet with RGB values 24, 0, 61 and HSL 264°, 100%, 12%. It is a dark colour, so white text on it reaches 19:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#18003D#18003D
HEX#18003D
RGBrgb(24, 0, 61)
RGB (0–1)0.0941, 0, 0.2392
RGB percentages9.4%, 0%, 23.9%
HSLhsl(263.6, 100%, 12%)
HSV / HSBhsv(263.6, 100%, 23.9%)
CMYK60.7%, 100%, 0%, 76.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,572,925
CSS custom property--colour: #18003D;

Brightness & contrast

Relative luminance0.00531WCAG 2.x, 0 is black and 1 is white
Perceived brightness24.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.98:1
Contrast with white18.98:1WCAG normal text: AAA
Contrast with black1.11:1WCAG normal text: Fail
Greyscale equivalent#0A0A0A
Inverted#E7FFC2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00113Fno red cones; affects about 1% of men; ΔE 13.2 from the original
Deuteranopia#000F3Cno green cones; the most common form, about 1% of men; ΔE 13.6 from the original
Tritanopia#0A1220no blue cones; rare, and affects men and women equally; ΔE 34.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.98:1WCAG large text: AAA
Contrast with black, large text1.11:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 20.4Dark slateblue · ΔE 27.6Rebecca purple · ΔE 35.1Indigo · ΔE 35.3Navy · ΔE 38.4Purple · ΔE 40.4
Nearest named CSS colourMidnight blue (#191970)ΔE 20.35, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#253D00
Analogous#00063D, #37003D
Triadic#3D1800, #003D18
Split complementary#3D3700, #063D00
Tetradic#3D0006, #253D00, #003D37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6A0AFF
Lighter +30%#5400D6
Lighter +20%#4000A3
Lighter +10%#2C0070
Darker −10%#04000A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#18003D
Less saturated −25%#1A0835

Channel breakdown

R24
G0
B61
Red24 (9.4%)
Green0 (0%)
Blue61 (23.9%)
Hue263.61°
Saturation (HSL)100%
Lightness11.96%
Dominant channelBlue
Hex per channelR 18 · G 00 · B 3D

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Every value on this page was computed from “18003d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.