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Colour

#17211C

  • #17211C
  • Cyan
  • Dark
  • Nearest: Black

#17211C is a cyan with RGB values 23, 33, 28 and HSL 150°, 18%, 11%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#17211C#17211C
HEX#17211C
RGBrgb(23, 33, 28)
RGB (0–1)0.0902, 0.1294, 0.1098
RGB percentages9%, 12.9%, 11%
HSLhsl(150, 17.9%, 11%)
HSV / HSBhsv(150, 30.3%, 12.9%)
CMYK30.3%, 0%, 15.2%, 87.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,515,804
CSS custom property--colour: #17211C;

Brightness & contrast

Relative luminance0.01354WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.53:1
Contrast with white16.53:1WCAG normal text: AAA
Contrast with black1.27:1WCAG normal text: Fail
Greyscale equivalent#1F1F1F
Inverted#E8DEE3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#21201Cno red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#1F1E1Cno green cones; the most common form, about 1% of men; ΔE 5.9 from the original
Tritanopia#152120no blue cones; rare, and affects men and women equally; ΔE 3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.53:1WCAG large text: AAA
Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Black · ΔE 13.2Dark slate grey · ΔE 21.2Dim grey · ΔE 33.3Gray · ΔE 42.4Slate grey · ΔE 43.2Dark olivegreen · ΔE 43.9
Nearest named CSS colourBlack (#000000)ΔE 13.17, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#21171C
Analogous#172117, #172121
Triadic#1C1721, #211C17
Split complementary#211721, #211717
Tetradic#171721, #21171C, #212117

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6C9882
Lighter +30%#567B69
Lighter +20%#415D4F
Lighter +10%#2C3F36
Darker −10%#020303
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#10281C
Less saturated −25%#1C1C1C

Channel breakdown

R23
G33
B28
Red23 (9%)
Green33 (12.9%)
Blue28 (11%)
Hue150°
Saturation (HSL)17.86%
Lightness10.98%
Dominant channelGreen
Hex per channelR 17 · G 21 · B 1C

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Every value on this page was computed from “17211c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.