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Recognised as Colour

#42374C

  • #42374C
  • Violet
  • Dark
  • Nearest: Dark slate grey

#42374C is a violet with RGB values 66, 55, 76 and HSL 271°, 16%, 26%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#42374C#42374C
HEX#42374C
RGBrgb(66, 55, 76)
RGB (0–1)0.2588, 0.2157, 0.298
RGB percentages25.9%, 21.6%, 29.8%
HSLhsl(271.4, 16%, 25.7%)
HSV / HSBhsv(271.4, 27.6%, 29.8%)
CMYK13.2%, 27.6%, 0%, 70.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,339,532
CSS custom property--colour: #42374C;

Brightness & contrast

Relative luminance0.04412WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.16:1
Contrast with white11.16:1WCAG normal text: AAA
Contrast with black1.88:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#BDC8B3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#333B4Dno red cones; affects about 1% of men; ΔE 8 from the original
Deuteranopia#363B4Bno green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#413A3Eno blue cones; rare, and affects men and women equally; ΔE 11.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.16:1WCAG large text: AAA
Contrast with black, large text1.88:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 23.4Dim grey · ΔE 24.3Black · ΔE 29Slate grey · ΔE 30.2Gray · ΔE 32.1Light slate grey · ΔE 33.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 23.42, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#414C37
Analogous#37374C, #4C374B
Triadic#4C4237, #374C42
Split complementary#4B4C37, #374C38
Tetradic#4C3837, #414C37, #374B4C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A899B6
Lighter +30%#8F7CA0
Lighter +20%#756287
Lighter +10%#5C4C6A
Darker −10%#28222E
Darker −20%#0F0C11
Darker −30%#000000
Darker −40%#000000
More saturated +25%#43275C
Less saturated −25%#424242

Channel breakdown

R66
G55
B76
Red66 (25.9%)
Green55 (21.6%)
Blue76 (29.8%)
Hue271.43°
Saturation (HSL)16.03%
Lightness25.69%
Dominant channelBlue
Hex per channelR 42 · G 37 · B 4C

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Every value on this page was computed from “42374c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.