Colour

#21101B

#21101B
Magenta
Dark
Nearest: Black

#21101B is a magenta with RGB values 33, 16, 27 and HSL 321°, 35%, 10%. It is a dark colour, so white text on it reaches 18.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#21101B#21101B

HEX#21101B

RGBrgb(33, 16, 27)

RGB (0–1)0.1294, 0.0627, 0.1059

RGB percentages12.9%, 6.3%, 10.6%

HSLhsl(321.2, 34.7%, 9.6%)

HSV / HSBhsv(321.2, 51.5%, 12.9%)

CMYK0%, 51.5%, 18.2%, 87.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,166,811

CSS custom property--colour: #21101B;

Brightness & contrast

Relative luminance0.00773WCAG 2.x, 0 is black and 1 is white

Perceived brightness23.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 18.19:1

Contrast with white18.19:1WCAG normal text: AAA

Contrast with black1.15:1WCAG normal text: Fail

Greyscale equivalent#141414

Inverted#DEEFE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#11141Bno red cones; affects about 1% of men; ΔE 10.3 from the original

Deuteranopia#15161Bno green cones; the most common form, about 1% of men; ΔE 10 from the original

Tritanopia#231014no blue cones; rare, and affects men and women equally; ΔE 5.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text18.19:1WCAG large text: AAA

Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Black · ΔE 13.5 Dark slate grey · ΔE 33.2 Dim grey · ΔE 39.2 Dark slateblue · ΔE 47.4 Gray · ΔE 48 Slate grey · ΔE 48.1

Nearest named CSS colourBlack (#000000)ΔE 13.54, a distinctly different colour

Hue familymagenta

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#102116

Analogous#1F1021, #211012

Triadic#1B2110, #101B21

Split complementary#132110, #10211F

Tetradic#211F10, #102116, #101221

Tints, shades & saturation

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

Lighter +40%#AA538B

Lighter +30%#88426F

Lighter +20%#663153

Lighter +10%#432137

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#270A1D

Less saturated −25%#1B1619

Channel breakdown

R33

G16

B27

Red33 (12.9%)

Green16 (6.3%)

Blue27 (10.6%)

Hue321.18°

Saturation (HSL)34.69%

Lightness9.61%

Dominant channelRed

Hex per channelR 21 · G 10 · B 1B

Keep nerding

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#21101B

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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