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Recognised as Colour

#004139

  • #004139
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#004139 is a cyan with RGB values 0, 65, 57 and HSL 173°, 100%, 13%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#004139#004139
HEX#004139
RGBrgb(0, 65, 57)
RGB (0–1)0, 0.2549, 0.2235
RGB percentages0%, 25.5%, 22.4%
HSLhsl(172.6, 100%, 12.7%)
HSV / HSBhsv(172.6, 100%, 25.5%)
CMYK100%, 0%, 12.3%, 74.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,697
CSS custom property--colour: #004139;

Brightness & contrast

Relative luminance0.04076WCAG 2.x, 0 is black and 1 is white
Perceived brightness53.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.57:1
Contrast with white11.57:1WCAG normal text: AAA
Contrast with black1.82:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#FFBEC6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3D3C39no red cones; affects about 1% of men; ΔE 20.8 from the original
Deuteranopia#35363Ano green cones; the most common form, about 1% of men; ΔE 21.5 from the original
Tritanopia#00423Fno blue cones; rare, and affects men and women equally; ΔE 3.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.57:1WCAG large text: AAA
Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 12.2Teal · ΔE 26.8Dim grey · ΔE 29.3Dark cyan · ΔE 31.1Black · ΔE 31.7Slate grey · ΔE 35.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 12.18, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#410008
Analogous#004119, #002841
Triadic#390041, #413900
Split complementary#410028, #411900
Tetradic#190041, #410008, #284100

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#0EFFE1
Lighter +30%#00DABF
Lighter +20%#00A792
Lighter +10%#007466
Darker −10%#000E0C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004139
Less saturated −25%#083933

Channel breakdown

R0
G65
B57
Red0 (0%)
Green65 (25.5%)
Blue57 (22.4%)
Hue172.62°
Saturation (HSL)100%
Lightness12.75%
Dominant channelGreen
Hex per channelR 00 · G 41 · B 39

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Every value on this page was computed from “hex 004139” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.