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Recognised as Colour

#31575D

  • #31575D
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#31575D is a cyan with RGB values 49, 87, 93 and HSL 188°, 31%, 28%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#31575D#31575D
HEX#31575D
RGBrgb(49, 87, 93)
RGB (0–1)0.1922, 0.3412, 0.3647
RGB percentages19.2%, 34.1%, 36.5%
HSLhsl(188.2, 31%, 27.8%)
HSV / HSBhsv(188.2, 47.3%, 36.5%)
CMYK47.3%, 6.5%, 0%, 63.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,233,629
CSS custom property--colour: #31575D;

Brightness & contrast

Relative luminance0.0826WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.92:1
Contrast with white7.92:1WCAG normal text: AAA
Contrast with black2.65:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#CEA8A2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#51545Dno red cones; affects about 1% of men; ΔE 12.8 from the original
Deuteranopia#4A4F5Dno green cones; the most common form, about 1% of men; ΔE 13.2 from the original
Tritanopia#1C5A59no blue cones; rare, and affects men and women equally; ΔE 8.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.92:1WCAG large text: AAA
Contrast with black, large text2.65:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 5.1Dim grey · ΔE 17.2Slate grey · ΔE 20.9Teal · ΔE 22Light slate grey · ΔE 23.6Gray · ΔE 23.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 5.15, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5D3731
Analogous#315D4D, #31415D
Triadic#5D3157, #575D31
Split complementary#5D3141, #5D4D31
Tetradic#4D315D, #5D3731, #415D31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#94BFC6
Lighter +30%#72ACB5
Lighter +20%#5495A0
Lighter +10%#43767E
Darker −10%#1F383C
Darker −20%#0E191A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1F646F
Less saturated −25%#434A4B

Channel breakdown

R49
G87
B93
Red49 (19.2%)
Green87 (34.1%)
Blue93 (36.5%)
Hue188.18°
Saturation (HSL)30.99%
Lightness27.84%
Dominant channelBlue
Hex per channelR 31 · G 57 · B 5D

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Every value on this page was computed from “31575d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.