Colour

#18033D

#18033D
Violet
Dark
Nearest: Midnight blue

#18033D is a violet with RGB values 24, 3, 61 and HSL 262°, 91%, 13%. It is a dark colour, so white text on it reaches 18.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#18033D#18033D

HEX#18033D

RGBrgb(24, 3, 61)

RGB (0–1)0.0941, 0.0118, 0.2392

RGB percentages9.4%, 1.2%, 23.9%

HSLhsl(261.7, 90.6%, 12.5%)

HSV / HSBhsv(261.7, 95.1%, 23.9%)

CMYK60.7%, 95.1%, 0%, 76.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,573,693

CSS custom property--colour: #18033D;

Brightness & contrast

Relative luminance0.00596WCAG 2.x, 0 is black and 1 is white

Perceived brightness24.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 18.76:1

Contrast with white18.76:1WCAG normal text: AAA

Contrast with black1.12:1WCAG normal text: Fail

Greyscale equivalent#0C0C0C

Inverted#E7FCC2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00133Fno red cones; affects about 1% of men; ΔE 13.1 from the original

Deuteranopia#00103Cno green cones; the most common form, about 1% of men; ΔE 12.6 from the original

Tritanopia#0A1421no blue cones; rare, and affects men and women equally; ΔE 33.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text18.76:1WCAG large text: AAA

Contrast with black, large text1.12:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 21.2 Dark slateblue · ΔE 27.3 Rebecca purple · ΔE 35.7 Indigo · ΔE 36.7 Navy · ΔE 39.9 Purple · ΔE 41.3

Nearest named CSS colourMidnight blue (#191970)ΔE 21.2, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#283D03

Analogous#030B3D, #35033D

Triadic#3D1803, #033D18

Split complementary#3D3503, #0B3D03

Tetradic#3D030B, #283D03, #033D35

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#6818F4

Lighter +30%#510ACF

Lighter +20%#3E089E

Lighter +10%#2B056E

Darker −10%#05010C

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#170040

Less saturated −25%#1A0B35

Channel breakdown

R24

B61

Red24 (9.4%)

Green3 (1.2%)

Blue61 (23.9%)

Hue261.72°

Saturation (HSL)90.63%

Lightness12.55%

Dominant channelBlue

Hex per channelR 18 · G 03 · B 3D

Keep nerding

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#18033D

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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