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Recognised as Colour

#283B67

  • #283B67
  • Blue
  • Dark
  • Nearest: Dark slateblue

#283B67 is a blue with RGB values 40, 59, 103 and HSL 222°, 44%, 28%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#283B67#283B67
HEX#283B67
RGBrgb(40, 59, 103)
RGB (0–1)0.1569, 0.2314, 0.4039
RGB percentages15.7%, 23.1%, 40.4%
HSLhsl(221.9, 44.1%, 28%)
HSV / HSBhsv(221.9, 61.2%, 40.4%)
CMYK61.2%, 42.7%, 0%, 59.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,636,647
CSS custom property--colour: #283B67;

Brightness & contrast

Relative luminance0.04558WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.99:1
Contrast with white10.99:1WCAG normal text: AAA
Contrast with black1.91:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#D7C498

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#283F69no red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#203A66no green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#00454Cno blue cones; rare, and affects men and women equally; ΔE 29.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.99:1WCAG large text: AAA
Contrast with black, large text1.91:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 24Steel blue · ΔE 29.6Dark slate grey · ΔE 31.5Midnight blue · ΔE 33.8Slate grey · ΔE 33.9Dim grey · ΔE 34.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.95, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#675428
Analogous#285A67, #352867
Triadic#67283B, #3B6728
Split complementary#673528, #5A6728
Tetradic#67285A, #675428, #286735

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8A9FD1
Lighter +30%#6581C3
Lighter +20%#4565B0
Lighter +10%#36508C
Darker −10%#1A2642
Darker −20%#0B111E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#163479
Less saturated −25%#3A4255

Channel breakdown

R40
G59
B103
Red40 (15.7%)
Green59 (23.1%)
Blue103 (40.4%)
Hue221.9°
Saturation (HSL)44.06%
Lightness28.04%
Dominant channelBlue
Hex per channelR 28 · G 3B · B 67

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Every value on this page was computed from “283b67” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.