Colour

#21004E

#21004E
Violet
Dark
Nearest: Midnight blue

#21004E is a violet with RGB values 33, 0, 78 and HSL 265°, 100%, 15%. It is a dark colour, so white text on it reaches 17.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#21004E#21004E

HEX#21004E

RGBrgb(33, 0, 78)

RGB (0–1)0.1294, 0, 0.3059

RGB percentages12.9%, 0%, 30.6%

HSLhsl(265.4, 100%, 15.3%)

HSV / HSBhsv(265.4, 100%, 30.6%)

CMYK57.7%, 100%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,162,766

CSS custom property--colour: #21004E;

Brightness & contrast

Relative luminance0.00873WCAG 2.x, 0 is black and 1 is white

Perceived brightness31.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.88:1

Contrast with white17.88:1WCAG normal text: AAA

Contrast with black1.17:1WCAG normal text: Fail

Greyscale equivalent#0D0D0D

Inverted#DEFFB1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#001850no red cones; affects about 1% of men; ΔE 18.5 from the original

Deuteranopia#00164Dno green cones; the most common form, about 1% of men; ΔE 18.3 from the original

Tritanopia#111A2Ano blue cones; rare, and affects men and women equally; ΔE 43.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.88:1WCAG large text: AAA

Contrast with black, large text1.17:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 13 Indigo · ΔE 24.7 Dark slateblue · ΔE 24.8 Rebecca purple · ΔE 27.2 Navy · ΔE 28.1 Purple · ΔE 32.5

Nearest named CSS colourMidnight blue (#191970)ΔE 12.95, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2D4E00

Analogous#00064E, #48004E

Triadic#4E2100, #004E21

Split complementary#4E4800, #064E00

Tetradic#4E0006, #2D4E00, #004E48

Tints, shades & saturation

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

Lighter +40%#7B1BFF

Lighter +30%#6200E7

Lighter +20%#4C00B4

Lighter +10%#370081

Darker −10%#0B001B

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#21004E

Less saturated −25%#230A44

Channel breakdown

R33

B78

Red33 (12.9%)

Green0 (0%)

Blue78 (30.6%)

Hue265.38°

Saturation (HSL)100%

Lightness15.29%

Dominant channelBlue

Hex per channelR 21 · G 00 · B 4E

Keep nerding

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#21004E

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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