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Recognised as Colour

#283B41

  • #283B41
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#283B41 is a cyan with RGB values 40, 59, 65 and HSL 194°, 24%, 21%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#283B41#283B41
HEX#283B41
RGBrgb(40, 59, 65)
RGB (0–1)0.1569, 0.2314, 0.2549
RGB percentages15.7%, 23.1%, 25.5%
HSLhsl(194.4, 23.8%, 20.6%)
HSV / HSBhsv(194.4, 38.5%, 25.5%)
CMYK38.5%, 9.2%, 0%, 74.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,636,609
CSS custom property--colour: #283B41;

Brightness & contrast

Relative luminance0.03961WCAG 2.x, 0 is black and 1 is white
Perceived brightness54.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.72:1
Contrast with white11.72:1WCAG normal text: AAA
Contrast with black1.79:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#D7C4BE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#373A41no red cones; affects about 1% of men; ΔE 6.5 from the original
Deuteranopia#333741no green cones; the most common form, about 1% of men; ΔE 6.7 from the original
Tritanopia#1F3D3Dno blue cones; rare, and affects men and women equally; ΔE 6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.72:1WCAG large text: AAA
Contrast with black, large text1.79:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 10Dim grey · ΔE 22.5Black · ΔE 25Slate grey · ΔE 29.9Gray · ΔE 31.2Light slate grey · ΔE 32.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 10.02, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#412E28
Analogous#28413A, #282F41
Triadic#41283B, #3B4128
Split complementary#41282F, #413A28
Tetradic#3A2841, #412E28, #2F4128

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#83A7B2
Lighter +30%#63919F
Lighter +20%#4F7480
Lighter +10%#3B5861
Darker −10%#151E21
Darker −20%#010202
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1B424E
Less saturated −25%#353535

Channel breakdown

R40
G59
B65
Red40 (15.7%)
Green59 (23.1%)
Blue65 (25.5%)
Hue194.4°
Saturation (HSL)23.81%
Lightness20.59%
Dominant channelBlue
Hex per channelR 28 · G 3B · B 41

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Every value on this page was computed from “283b41” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.