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Recognised as Colour

#04281B

  • #04281B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#04281B is a cyan with RGB values 4, 40, 27 and HSL 158°, 82%, 9%. It is a dark colour, so white text on it reaches 15.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#04281B#04281B
HEX#04281B
RGBrgb(4, 40, 27)
RGB (0–1)0.0157, 0.1569, 0.1059
RGB percentages1.6%, 15.7%, 10.6%
HSLhsl(158.3, 81.8%, 8.6%)
HSV / HSBhsv(158.3, 90%, 15.7%)
CMYK90%, 0%, 32.5%, 84.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer272,411
CSS custom property--colour: #04281B;

Brightness & contrast

Relative luminance0.01623WCAG 2.x, 0 is black and 1 is white
Perceived brightness32 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.85:1
Contrast with white15.85:1WCAG normal text: AAA
Contrast with black1.32:1WCAG normal text: Fail
Greyscale equivalent#1F1F1F
Inverted#FBD7E4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#27241Ano red cones; affects about 1% of men; ΔE 16.3 from the original
Deuteranopia#22211Cno green cones; the most common form, about 1% of men; ΔE 16.2 from the original
Tritanopia#002824no blue cones; rare, and affects men and women equally; ΔE 6.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.85:1WCAG large text: AAA
Contrast with black, large text1.32:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.5Black · ΔE 22Dim grey · ΔE 35.6Dark olivegreen · ΔE 38.7Teal · ΔE 39.3Dark cyan · ΔE 43.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.52, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#280411
Analogous#042809, #042328
Triadic#1B0428, #281B04
Split complementary#280423, #280904
Tetradic#090428, #280411, #232804

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#17E198
Lighter +30%#12B379
Lighter +20%#0D855A
Lighter +10%#09563A
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002C1C
Less saturated −25%#0A2319

Channel breakdown

R4
G40
B27
Red4 (1.6%)
Green40 (15.7%)
Blue27 (10.6%)
Hue158.33°
Saturation (HSL)81.82%
Lightness8.63%
Dominant channelGreen
Hex per channelR 04 · G 28 · B 1B

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Every value on this page was computed from “04281b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.