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Recognised as Colour

#042F2F

  • #042F2F
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#042F2F is a cyan with RGB values 4, 47, 47 and HSL 180°, 84%, 10%. It is a dark colour, so white text on it reaches 14.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#042F2F#042F2F
HEX#042F2F
RGBrgb(4, 47, 47)
RGB (0–1)0.0157, 0.1843, 0.1843
RGB percentages1.6%, 18.4%, 18.4%
HSLhsl(180, 84.3%, 10%)
HSV / HSBhsv(180, 91.5%, 18.4%)
CMYK91.5%, 0%, 0%, 81.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer274,223
CSS custom property--colour: #042F2F;

Brightness & contrast

Relative luminance0.02264WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.45:1
Contrast with white14.45:1WCAG normal text: AAA
Contrast with black1.45:1WCAG normal text: Fail
Greyscale equivalent#262626
Inverted#FBD0D0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B2C2Fno red cones; affects about 1% of men; ΔE 14.3 from the original
Deuteranopia#25282Fno green cones; the most common form, about 1% of men; ΔE 14.4 from the original
Tritanopia#00312Fno blue cones; rare, and affects men and women equally; ΔE 2.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.45:1WCAG large text: AAA
Contrast with black, large text1.45:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 14.6Black · ΔE 22.2Dim grey · ΔE 31.2Teal · ΔE 35.1Slate grey · ΔE 38.4Dark cyan · ΔE 39.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 14.6, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2F0404
Analogous#042F1A, #041A2F
Triadic#2F042F, #2F2F04
Split complementary#2F041A, #2F1A04
Tetradic#1A042F, #2F0404, #1A2F04

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#14EBEB
Lighter +30%#10BCBC
Lighter +20%#0C8D8D
Lighter +10%#085E5E
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003333
Less saturated −25%#0A2929

Channel breakdown

R4
G47
B47
Red4 (1.6%)
Green47 (18.4%)
Blue47 (18.4%)
Hue180°
Saturation (HSL)84.31%
Lightness10%
Dominant channelGreen and Blue
Hex per channelR 04 · G 2F · B 2F

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Every value on this page was computed from “042f2f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.