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Recognised as Colour

#21091A

  • #21091A
  • Magenta
  • Dark
  • Nearest: Black

#21091A is a magenta with RGB values 33, 9, 26 and HSL 318°, 57%, 8%. It is a dark colour, so white text on it reaches 18.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#21091A#21091A
HEX#21091A
RGBrgb(33, 9, 26)
RGB (0–1)0.1294, 0.0353, 0.102
RGB percentages12.9%, 3.5%, 10.2%
HSLhsl(317.5, 57.1%, 8.2%)
HSV / HSBhsv(317.5, 72.7%, 12.9%)
CMYK0%, 72.7%, 21.2%, 87.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,165,018
CSS custom property--colour: #21091A;

Brightness & contrast

Relative luminance0.00593WCAG 2.x, 0 is black and 1 is white
Perceived brightness21.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.77:1
Contrast with white18.77:1WCAG normal text: AAA
Contrast with black1.12:1WCAG normal text: Fail
Greyscale equivalent#0F0F0F
Inverted#DEF6E5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0A0F1Bno red cones; affects about 1% of men; ΔE 13.1 from the original
Deuteranopia#111319no green cones; the most common form, about 1% of men; ΔE 13.5 from the original
Tritanopia#230910no blue cones; rare, and affects men and women equally; ΔE 6.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.77:1WCAG large text: AAA
Contrast with black, large text1.12:1WCAG large text: Fail

Named colours

Black · ΔE 16.2Dark slate grey · ΔE 36.7Dim grey · ΔE 41.9Dark slateblue · ΔE 46Midnight blue · ΔE 48.4Slate grey · ΔE 50.4
Nearest named CSS colourBlack (#000000)ΔE 16.16, a distinctly different colour
Hue familymagenta
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#092110
Analogous#1C0921, #21090E
Triadic#1A2109, #091A21
Split complementary#0E2109, #09211C
Tetradic#211C09, #092110, #090E21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C13598
Lighter +30%#992A79
Lighter +20%#711F59
Lighter +10%#49143A
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#26041C
Less saturated −25%#1C0E18

Channel breakdown

R33
G9
B26
Red33 (12.9%)
Green9 (3.5%)
Blue26 (10.2%)
Hue317.5°
Saturation (HSL)57.14%
Lightness8.24%
Dominant channelRed
Hex per channelR 21 · G 09 · B 1A

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Every value on this page was computed from “21091a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.