Colour

#21154C

#21154C
Blue
Dark
Nearest: Midnight blue

#21154C is a blue with RGB values 33, 21, 76 and HSL 253°, 57%, 19%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#21154C#21154C

HEX#21154C

RGBrgb(33, 21, 76)

RGB (0–1)0.1294, 0.0824, 0.298

RGB percentages12.9%, 8.2%, 29.8%

HSLhsl(253.1, 56.7%, 19%)

HSV / HSBhsv(253.1, 72.4%, 29.8%)

CMYK56.6%, 72.4%, 0%, 70.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,168,140

CSS custom property--colour: #21154C;

Brightness & contrast

Relative luminance0.01381WCAG 2.x, 0 is black and 1 is white

Perceived brightness35.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.45:1

Contrast with white16.45:1WCAG normal text: AAA

Contrast with black1.28:1WCAG normal text: Fail

Greyscale equivalent#1C1C1C

Inverted#DEEAB3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00204Eno red cones; affects about 1% of men; ΔE 12.6 from the original

Deuteranopia#001E4Bno green cones; the most common form, about 1% of men; ΔE 12.5 from the original

Tritanopia#11232Eno blue cones; rare, and affects men and women equally; ΔE 34.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.45:1WCAG large text: AAA

Contrast with black, large text1.28:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 20.2 Dark slateblue · ΔE 21.8 Rebecca purple · ΔE 33 Indigo · ΔE 37.1 Purple · ΔE 40.8 Black · ΔE 40.9

Nearest named CSS colourMidnight blue (#191970)ΔE 20.17, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#404C15

Analogous#15254C, #3C154C

Triadic#4C2115, #154C21

Split complementary#4C3C15, #254C15

Tetradic#4C1525, #404C15, #154C3C

Tints, shades & saturation

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

Lighter +40%#755BD2

Lighter +30%#5536C4

Lighter +20%#442B9C

Lighter +10%#322074

Darker −10%#100A24

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#1A0958

Less saturated −25%#282140

Channel breakdown

R33

G21

B76

Red33 (12.9%)

Green21 (8.2%)

Blue76 (29.8%)

Hue253.09°

Saturation (HSL)56.7%

Lightness19.02%

Dominant channelBlue

Hex per channelR 21 · G 15 · B 4C

Keep nerding

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#21154C

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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