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Colour

#28121C

  • #28121C
  • Red
  • Dark
  • Nearest: Black

#28121C is a red with RGB values 40, 18, 28 and HSL 333°, 38%, 11%. It is a dark colour, so white text on it reaches 17.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#28121C#28121C
HEX#28121C
RGBrgb(40, 18, 28)
RGB (0–1)0.1569, 0.0706, 0.1098
RGB percentages15.7%, 7.1%, 11%
HSLhsl(332.7, 37.9%, 11.4%)
HSV / HSBhsv(332.7, 55%, 15.7%)
CMYK0%, 55%, 30%, 84.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,626,076
CSS custom property--colour: #28121C;

Brightness & contrast

Relative luminance0.00968WCAG 2.x, 0 is black and 1 is white
Perceived brightness27.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.6:1
Contrast with white17.6:1WCAG normal text: AAA
Contrast with black1.19:1WCAG normal text: Fail
Greyscale equivalent#171717
Inverted#D7EDE3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#14171Cno red cones; affects about 1% of men; ΔE 13.2 from the original
Deuteranopia#1A1A1Bno green cones; the most common form, about 1% of men; ΔE 12.9 from the original
Tritanopia#2B1116no blue cones; rare, and affects men and women equally; ΔE 4.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.6:1WCAG large text: AAA
Contrast with black, large text1.19:1WCAG large text: Fail

Named colours

Black · ΔE 15.8Dark slate grey · ΔE 33.5Dim grey · ΔE 38.1Gray · ΔE 46.8Slate grey · ΔE 47.4Dark slateblue · ΔE 47.5
Nearest named CSS colourBlack (#000000)ΔE 15.84, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#12281E
Analogous#281227, #281312
Triadic#1C2812, #121C28
Split complementary#122813, #122728
Tetradic#272812, #12281E, #131228

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2547F
Lighter +30%#924166
Lighter +20%#6E324D
Lighter +10%#4B2235
Darker −10%#050203
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2F0B1B
Less saturated −25%#21191D

Channel breakdown

R40
G18
B28
Red40 (15.7%)
Green18 (7.1%)
Blue28 (11%)
Hue332.73°
Saturation (HSL)37.93%
Lightness11.37%
Dominant channelRed
Hex per channelR 28 · G 12 · B 1C

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Every value on this page was computed from “28121c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.