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Recognised as Colour

#1F4347

  • #1F4347
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#1F4347 is a cyan with RGB values 31, 67, 71 and HSL 186°, 39%, 20%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1F4347#1F4347
HEX#1F4347
RGBrgb(31, 67, 71)
RGB (0–1)0.1216, 0.2627, 0.2784
RGB percentages12.2%, 26.3%, 27.8%
HSLhsl(186, 39.2%, 20%)
HSV / HSBhsv(186, 56.3%, 27.8%)
CMYK56.3%, 5.6%, 0%, 72.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,048,839
CSS custom property--colour: #1F4347;

Brightness & contrast

Relative luminance0.04761WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.76:1
Contrast with white10.76:1WCAG normal text: AAA
Contrast with black1.95:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#E0BCB8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3E4047no red cones; affects about 1% of men; ΔE 12.6 from the original
Deuteranopia#383C47no green cones; the most common form, about 1% of men; ΔE 12.8 from the original
Tritanopia#054644no blue cones; rare, and affects men and women equally; ΔE 7.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.76:1WCAG large text: AAA
Contrast with black, large text1.95:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 5.9Dim grey · ΔE 22.7Teal · ΔE 28.2Slate grey · ΔE 28.7Black · ΔE 29.2Gray · ΔE 30.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 5.87, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#47231F
Analogous#1F4737, #1F2F47
Triadic#471F43, #43471F
Split complementary#471F2F, #47371F
Tetradic#371F47, #47231F, #2F471F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#71B9C1
Lighter +30%#4EA8B2
Lighter +20%#3E868E
Lighter +10%#2E646A
Darker −10%#102124
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#124D54
Less saturated −25%#2C393A

Channel breakdown

R31
G67
B71
Red31 (12.2%)
Green67 (26.3%)
Blue71 (27.8%)
Hue186°
Saturation (HSL)39.22%
Lightness20%
Dominant channelBlue
Hex per channelR 1F · G 43 · B 47

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Every value on this page was computed from “1f4347” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.