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Recognised as Colour

#2C171F

  • #2C171F
  • Red
  • Dark
  • Nearest: Black

#2C171F is a red with RGB values 44, 23, 31 and HSL 337°, 31%, 13%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#2C171F#2C171F
HEX#2C171F
RGBrgb(44, 23, 31)
RGB (0–1)0.1725, 0.0902, 0.1216
RGB percentages17.3%, 9%, 12.2%
HSLhsl(337.1, 31.3%, 13.1%)
HSV / HSBhsv(337.1, 47.7%, 17.3%)
CMYK0%, 47.7%, 29.5%, 82.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,889,503
CSS custom property--colour: #2C171F;

Brightness & contrast

Relative luminance0.01247WCAG 2.x, 0 is black and 1 is white
Perceived brightness31.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.81:1
Contrast with white16.81:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#D3E8E0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1A1B1Fno red cones; affects about 1% of men; ΔE 11.6 from the original
Deuteranopia#1F1F1Fno green cones; the most common form, about 1% of men; ΔE 12.1 from the original
Tritanopia#2F161Ano blue cones; rare, and affects men and women equally; ΔE 4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.81:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 16.2Dark slate grey · ΔE 31.4Dim grey · ΔE 35.6Gray · ΔE 44.3Slate grey · ΔE 45.3Dark slateblue · ΔE 47.7
Nearest named CSS colourBlack (#000000)ΔE 16.24, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#172C24
Analogous#2C172A, #2C1A17
Triadic#1F2C17, #171F2C
Split complementary#172C1A, #172A2C
Tetradic#292C17, #172C24, #19172C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AD627F
Lighter +30%#904C66
Lighter +20%#6F3A4E
Lighter +10%#4D2937
Darker −10%#0B0507
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#340F1D
Less saturated −25%#241F21

Channel breakdown

R44
G23
B31
Red44 (17.3%)
Green23 (9%)
Blue31 (12.2%)
Hue337.14°
Saturation (HSL)31.34%
Lightness13.14%
Dominant channelRed
Hex per channelR 2C · G 17 · B 1F

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Every value on this page was computed from “2c171f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.