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Recognised as Colour

#28213D

  • #28213D
  • Violet
  • Dark
  • Nearest: Black

#28213D is a violet with RGB values 40, 33, 61 and HSL 255°, 30%, 18%. It is a dark colour, so white text on it reaches 15.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#28213D#28213D
HEX#28213D
RGBrgb(40, 33, 61)
RGB (0–1)0.1569, 0.1294, 0.2392
RGB percentages15.7%, 12.9%, 23.9%
HSLhsl(255, 29.8%, 18.4%)
HSV / HSBhsv(255, 45.9%, 23.9%)
CMYK34.4%, 45.9%, 0%, 76.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,629,949
CSS custom property--colour: #28213D;

Brightness & contrast

Relative luminance0.01876WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.27:1
Contrast with white15.27:1WCAG normal text: AAA
Contrast with black1.38:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#D7DEC2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#19263Eno red cones; affects about 1% of men; ΔE 8.1 from the original
Deuteranopia#1A253Cno green cones; the most common form, about 1% of men; ΔE 7.9 from the original
Tritanopia#23262Cno blue cones; rare, and affects men and women equally; ΔE 16.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.27:1WCAG large text: AAA
Contrast with black, large text1.38:1WCAG large text: Fail

Named colours

Black · ΔE 24.9Dark slate grey · ΔE 30.9Dark slateblue · ΔE 33.5Dim grey · ΔE 35.7Midnight blue · ΔE 38.8Slate grey · ΔE 40.7
Nearest named CSS colourBlack (#000000)ΔE 24.94, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#363D21
Analogous#21283D, #36213D
Triadic#3D2821, #213D28
Split complementary#3D3621, #283D21
Tetradic#3D2128, #363D21, #213D36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8575B5
Lighter +30%#6957A0
Lighter +20%#53457F
Lighter +10%#3E335E
Darker −10%#120F1C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#221549
Less saturated −25%#2E2D31

Channel breakdown

R40
G33
B61
Red40 (15.7%)
Green33 (12.9%)
Blue61 (23.9%)
Hue255°
Saturation (HSL)29.79%
Lightness18.43%
Dominant channelBlue
Hex per channelR 28 · G 21 · B 3D

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Every value on this page was computed from “28213d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.