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Recognised as Colour

#031819

  • #031819
  • Cyan
  • Dark
  • Nearest: Black

#031819 is a cyan with RGB values 3, 24, 25 and HSL 183°, 79%, 5%. It is a dark colour, so white text on it reaches 18.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#031819#031819
HEX#031819
RGBrgb(3, 24, 25)
RGB (0–1)0.0118, 0.0941, 0.098
RGB percentages1.2%, 9.4%, 9.8%
HSLhsl(182.7, 78.6%, 5.5%)
HSV / HSBhsv(182.7, 88%, 9.8%)
CMYK88%, 4%, 0%, 90.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer202,777
CSS custom property--colour: #031819;

Brightness & contrast

Relative luminance0.00743WCAG 2.x, 0 is black and 1 is white
Perceived brightness20.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.28:1
Contrast with white18.28:1WCAG normal text: AAA
Contrast with black1.15:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#FCE7E6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#161619no red cones; affects about 1% of men; ΔE 7.7 from the original
Deuteranopia#121419no green cones; the most common form, about 1% of men; ΔE 7.3 from the original
Tritanopia#001918no blue cones; rare, and affects men and women equally; ΔE 2.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.28:1WCAG large text: AAA
Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Black · ΔE 10.1Dark slate grey · ΔE 25Dim grey · ΔE 38.4Slate grey · ΔE 46.9Teal · ΔE 47.3Gray · ΔE 47.5
Nearest named CSS colourBlack (#000000)ΔE 10.09, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#190403
Analogous#03190F, #030D19
Triadic#190318, #181903
Split complementary#19030D, #190F03
Tetradic#0F0319, #190403, #0D1903

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#19C7CF
Lighter +30%#139BA2
Lighter +20%#0E6F74
Lighter +10%#084447
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001B1C
Less saturated −25%#071515

Channel breakdown

R3
G24
B25
Red3 (1.2%)
Green24 (9.4%)
Blue25 (9.8%)
Hue182.73°
Saturation (HSL)78.57%
Lightness5.49%
Dominant channelBlue
Hex per channelR 03 · G 18 · B 19

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Every value on this page was computed from “hex 031819” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.