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Recognised as Colour

#1F494B

  • #1F494B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#1F494B is a cyan with RGB values 31, 73, 75 and HSL 183°, 42%, 21%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1F494B#1F494B
HEX#1F494B
RGBrgb(31, 73, 75)
RGB (0–1)0.1216, 0.2863, 0.2941
RGB percentages12.2%, 28.6%, 29.4%
HSLhsl(182.7, 41.5%, 20.8%)
HSV / HSBhsv(182.7, 58.7%, 29.4%)
CMYK58.7%, 2.7%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,050,379
CSS custom property--colour: #1F494B;

Brightness & contrast

Relative luminance0.05564WCAG 2.x, 0 is black and 1 is white
Perceived brightness63.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.94:1
Contrast with white9.94:1WCAG normal text: AAA
Contrast with black2.11:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#E0B6B4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#44464Bno red cones; affects about 1% of men; ΔE 14.5 from the original
Deuteranopia#3D404Bno green cones; the most common form, about 1% of men; ΔE 15.4 from the original
Tritanopia#004C49no blue cones; rare, and affects men and women equally; ΔE 7.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.94:1WCAG large text: AAA
Contrast with black, large text2.11:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 4.1Dim grey · ΔE 22Teal · ΔE 25.1Slate grey · ΔE 27.6Dark cyan · ΔE 29.4Gray · ΔE 29.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 4.15, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B211F
Analogous#1F4B37, #1F334B
Triadic#4B1F49, #494B1F
Split complementary#4B1F33, #4B371F
Tetradic#371F4B, #4B211F, #334B1F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#71C1C5
Lighter +30%#4DB1B6
Lighter +20%#3D8F93
Lighter +10%#2E6C6F
Darker −10%#102627
Darker −20%#010303
Darker −30%#000000
Darker −40%#000000
More saturated +25%#125558
Less saturated −25%#2C3D3E

Channel breakdown

R31
G73
B75
Red31 (12.2%)
Green73 (28.6%)
Blue75 (29.4%)
Hue182.73°
Saturation (HSL)41.51%
Lightness20.78%
Dominant channelBlue
Hex per channelR 1F · G 49 · B 4B

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Every value on this page was computed from “1f494b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.