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Recognised as Colour

#21092A

  • #21092A
  • Violet
  • Dark
  • Nearest: Black

#21092A is a violet with RGB values 33, 9, 42 and HSL 284°, 65%, 10%. It is a dark colour, so white text on it reaches 18.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#21092A#21092A
HEX#21092A
RGBrgb(33, 9, 42)
RGB (0–1)0.1294, 0.0353, 0.1647
RGB percentages12.9%, 3.5%, 16.5%
HSLhsl(283.6, 64.7%, 10%)
HSV / HSBhsv(283.6, 78.6%, 16.5%)
CMYK21.4%, 78.6%, 0%, 83.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,165,034
CSS custom property--colour: #21092A;

Brightness & contrast

Relative luminance0.00686WCAG 2.x, 0 is black and 1 is white
Perceived brightness24 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.47:1
Contrast with white18.47:1WCAG normal text: AAA
Contrast with black1.14:1WCAG normal text: Fail
Greyscale equivalent#101010
Inverted#DEF6D5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#01122Bno red cones; affects about 1% of men; ΔE 15.7 from the original
Deuteranopia#091429no green cones; the most common form, about 1% of men; ΔE 15.6 from the original
Tritanopia#200F18no blue cones; rare, and affects men and women equally; ΔE 16.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.47:1WCAG large text: AAA
Contrast with black, large text1.14:1WCAG large text: Fail

Named colours

Black · ΔE 26Dark slateblue · ΔE 36.1Midnight blue · ΔE 36.6Dark slate grey · ΔE 41.6Dim grey · ΔE 45.8Rebecca purple · ΔE 47.1
Nearest named CSS colourBlack (#000000)ΔE 25.96, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#122A09
Analogous#11092A, #2A0922
Triadic#2A2109, #092A21
Split complementary#232A09, #092A10
Tetradic#2A1009, #122A09, #09232A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A52DD2
Lighter +30%#8424A8
Lighter +20%#631B7E
Lighter +10%#421254
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#240330
Less saturated −25%#1E0F24

Channel breakdown

R33
G9
B42
Red33 (12.9%)
Green9 (3.5%)
Blue42 (16.5%)
Hue283.64°
Saturation (HSL)64.71%
Lightness10%
Dominant channelBlue
Hex per channelR 21 · G 09 · B 2A

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Every value on this page was computed from “21092a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.