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Recognised as Colour

#18503B

  • #18503B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#18503B is a cyan with RGB values 24, 80, 59 and HSL 158°, 54%, 20%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#18503B#18503B
HEX#18503B
RGBrgb(24, 80, 59)
RGB (0–1)0.0941, 0.3137, 0.2314
RGB percentages9.4%, 31.4%, 23.1%
HSLhsl(157.5, 53.8%, 20.4%)
HSV / HSBhsv(157.5, 70%, 31.4%)
CMYK70%, 0%, 26.2%, 68.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,593,403
CSS custom property--colour: #18503B;

Brightness & contrast

Relative luminance0.06247WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.34:1
Contrast with white9.34:1WCAG normal text: AAA
Contrast with black2.25:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#E7AFC4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4E4A3Ano red cones; affects about 1% of men; ΔE 22.8 from the original
Deuteranopia#47443Cno green cones; the most common form, about 1% of men; ΔE 23.7 from the original
Tritanopia#00504Ano blue cones; rare, and affects men and women equally; ΔE 9.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.34:1WCAG large text: AAA
Contrast with black, large text2.25:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.4Teal · ΔE 24.5Dark olivegreen · ΔE 27Dark cyan · ΔE 28.2Dim grey · ΔE 28.9Sea green · ΔE 29.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.41, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#50182D
Analogous#18501F, #184950
Triadic#3B1850, #503B18
Split complementary#501849, #501F18
Tetradic#1F1850, #50182D, #495018

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#64D0A8
Lighter +30%#3CC592
Lighter +20%#309E75
Lighter +10%#247758
Darker −10%#0C291E
Darker −20%#000201
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B5D3E
Less saturated −25%#254338

Channel breakdown

R24
G80
B59
Red24 (9.4%)
Green80 (31.4%)
Blue59 (23.1%)
Hue157.5°
Saturation (HSL)53.85%
Lightness20.39%
Dominant channelGreen
Hex per channelR 18 · G 50 · B 3B

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Every value on this page was computed from “18503b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.