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Colour

#282C51

  • #282C51
  • Blue
  • Dark
  • Nearest: Dark slateblue

#282C51 is a blue with RGB values 40, 44, 81 and HSL 234°, 34%, 24%. It is a dark colour, so white text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#282C51#282C51
HEX#282C51
RGBrgb(40, 44, 81)
RGB (0–1)0.1569, 0.1725, 0.3176
RGB percentages15.7%, 17.3%, 31.8%
HSLhsl(234.1, 33.9%, 23.7%)
HSV / HSBhsv(234.1, 50.6%, 31.8%)
CMYK50.6%, 45.7%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,632,785
CSS custom property--colour: #282C51;

Brightness & contrast

Relative luminance0.02847WCAG 2.x, 0 is black and 1 is white
Perceived brightness48.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.38:1
Contrast with white13.38:1WCAG normal text: AAA
Contrast with black1.57:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#D7D3AE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1E3152no red cones; affects about 1% of men; ΔE 6 from the original
Deuteranopia#1B2E50no green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#19343Ano blue cones; rare, and affects men and women equally; ΔE 24.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.38:1WCAG large text: AAA
Contrast with black, large text1.57:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.4Dark slate grey · ΔE 31.4Black · ΔE 31.8Midnight blue · ΔE 34.4Dim grey · ΔE 35.5Steel blue · ΔE 36.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#514D28
Analogous#284151, #382851
Triadic#51282C, #2C5128
Split complementary#513828, #415128
Tetradic#512841, #514D28, #285138

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8389C2
Lighter +30%#6169B1
Lighter +20%#4A5195
Lighter +10%#393F73
Darker −10%#17192F
Darker −20%#06070D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#192060
Less saturated −25%#373842

Channel breakdown

R40
G44
B81
Red40 (15.7%)
Green44 (17.3%)
Blue81 (31.8%)
Hue234.15°
Saturation (HSL)33.88%
Lightness23.73%
Dominant channelBlue
Hex per channelR 28 · G 2C · B 51

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Every value on this page was computed from “282c51” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.