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Colour

#00373A

  • #00373A
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#00373A is a cyan with RGB values 0, 55, 58 and HSL 183°, 100%, 11%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#00373A#00373A
HEX#00373A
RGBrgb(0, 55, 58)
RGB (0–1)0, 0.2157, 0.2275
RGB percentages0%, 21.6%, 22.7%
HSLhsl(183.1, 100%, 11.4%)
HSV / HSBhsv(183.1, 100%, 22.7%)
CMYK100%, 5.2%, 0%, 77.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,138
CSS custom property--colour: #00373A;

Brightness & contrast

Relative luminance0.03038WCAG 2.x, 0 is black and 1 is white
Perceived brightness46.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.06:1
Contrast with white13.06:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#FFC8C5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#32343Ano red cones; affects about 1% of men; ΔE 16 from the original
Deuteranopia#2A2E3Ano green cones; the most common form, about 1% of men; ΔE 16.7 from the original
Tritanopia#003A38no blue cones; rare, and affects men and women equally; ΔE 4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.06:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11.9Black · ΔE 26Dim grey · ΔE 29.3Teal · ΔE 31.3Slate grey · ΔE 35.3Dark cyan · ΔE 35.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.91, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3A0300
Analogous#003A20, #001A3A
Triadic#3A0037, #373A00
Split complementary#3A001A, #3A2000
Tetradic#20003A, #3A0300, #1A3A00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#07F2FF
Lighter +30%#00C8D3
Lighter +20%#0098A0
Lighter +10%#00676D
Darker −10%#000707
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00373A
Less saturated −25%#073133

Channel breakdown

R0
G55
B58
Red0 (0%)
Green55 (21.6%)
Blue58 (22.7%)
Hue183.1°
Saturation (HSL)100%
Lightness11.37%
Dominant channelBlue
Hex per channelR 00 · G 37 · B 3A

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Every value on this page was computed from “00373a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.