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Recognised as Colour

#031815

  • #031815
  • Cyan
  • Dark
  • Nearest: Black

#031815 is a cyan with RGB values 3, 24, 21 and HSL 171°, 78%, 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

#031815#031815
HEX#031815
RGBrgb(3, 24, 21)
RGB (0–1)0.0118, 0.0941, 0.0824
RGB percentages1.2%, 9.4%, 8.2%
HSLhsl(171.4, 77.8%, 5.3%)
HSV / HSBhsv(171.4, 87.5%, 9.4%)
CMYK87.5%, 0%, 12.5%, 90.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer202,773
CSS custom property--colour: #031815;

Brightness & contrast

Relative luminance0.00727WCAG 2.x, 0 is black and 1 is white
Perceived brightness19.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.33:1
Contrast with white18.33:1WCAG normal text: AAA
Contrast with black1.15:1WCAG normal text: Fail
Greyscale equivalent#131313
Inverted#FCE7EA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#161615no red cones; affects about 1% of men; ΔE 7.7 from the original
Deuteranopia#131415no green cones; the most common form, about 1% of men; ΔE 7.7 from the original
Tritanopia#001917no blue cones; rare, and affects men and women equally; ΔE 1.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.33:1WCAG large text: AAA
Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Black · ΔE 10.2Dark slate grey · ΔE 25.2Dim grey · ΔE 38.7Teal · ΔE 47.4Gray · ΔE 47.7Slate grey · ΔE 47.7
Nearest named CSS colourBlack (#000000)ΔE 10.23, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#180306
Analogous#03180B, #031018
Triadic#150318, #181503
Split complementary#180310, #180B03
Tetradic#0B0318, #180306, #101803

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1ACDB4
Lighter +30%#14A08C
Lighter +20%#0E7364
Lighter +10%#09453D
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001B17
Less saturated −25%#061513

Channel breakdown

R3
G24
B21
Red3 (1.2%)
Green24 (9.4%)
Blue21 (8.2%)
Hue171.43°
Saturation (HSL)77.78%
Lightness5.29%
Dominant channelGreen
Hex per channelR 03 · G 18 · B 15

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Every value on this page was computed from “hex 031815” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.