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Recognised as Colour

#28373C

  • #28373C
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#28373C is a cyan with RGB values 40, 55, 60 and HSL 195°, 20%, 20%. It is a dark colour, so white text on it reaches 12.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#28373C#28373C
HEX#28373C
RGBrgb(40, 55, 60)
RGB (0–1)0.1569, 0.2157, 0.2353
RGB percentages15.7%, 21.6%, 23.5%
HSLhsl(195, 20%, 19.6%)
HSV / HSBhsv(195, 33.3%, 23.5%)
CMYK33.3%, 8.3%, 0%, 76.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,635,580
CSS custom property--colour: #28373C;

Brightness & contrast

Relative luminance0.0351WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.34:1
Contrast with white12.34:1WCAG normal text: AAA
Contrast with black1.7:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#D7C8C3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#34363Cno red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#31343Cno green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#223939no 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 text12.34:1WCAG large text: AAA
Contrast with black, large text1.7:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11.7Black · ΔE 23.1Dim grey · ΔE 23.5Slate grey · ΔE 31.4Gray · ΔE 32.4Light slate grey · ΔE 34.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.72, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3C2D28
Analogous#283C37, #282D3C
Triadic#3C2837, #373C28
Split complementary#3C282D, #3C3728
Tetradic#37283C, #3C2D28, #2D3C28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#83A2AD
Lighter +30%#658B98
Lighter +20%#516F79
Lighter +10%#3C535B
Darker −10%#141B1D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1C3D49
Less saturated −25%#323232

Channel breakdown

R40
G55
B60
Red40 (15.7%)
Green55 (21.6%)
Blue60 (23.5%)
Hue195°
Saturation (HSL)20%
Lightness19.61%
Dominant channelBlue
Hex per channelR 28 · G 37 · B 3C

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Every value on this page was computed from “28373c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.