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Recognised as Colour

#274D8A

  • #274D8A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#274D8A is a blue with RGB values 39, 77, 138 and HSL 217°, 56%, 35%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#274D8A#274D8A
HEX#274D8A
RGBrgb(39, 77, 138)
RGB (0–1)0.1529, 0.302, 0.5412
RGB percentages15.3%, 30.2%, 54.1%
HSLhsl(217, 55.9%, 34.7%)
HSV / HSBhsv(217, 71.7%, 54.1%)
CMYK71.7%, 44.2%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,575,754
CSS custom property--colour: #274D8A;

Brightness & contrast

Relative luminance0.07574WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.35:1
Contrast with white8.35:1WCAG normal text: AAA
Contrast with black2.51:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#D8B275

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#30538Cno red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#1F4A89no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#005B64no blue cones; rare, and affects men and women equally; ΔE 38.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.35:1WCAG large text: AAA
Contrast with black, large text2.51:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.4Steel blue · ΔE 23.7Cornflower blue · ΔE 31Midnight blue · ΔE 31.3Slate grey · ΔE 35.4Rebecca purple · ΔE 35.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.38, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A6427
Analogous#277E8A, #33278A
Triadic#8A274D, #4D8A27
Split complementary#8A3327, #7E8A27
Tetradic#8A277E, #8A6427, #278A33

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9AB6E3
Lighter +30%#7399D7
Lighter +20%#4B7CCC
Lighter +10%#3263B2
Darker −10%#1C3762
Darker −20%#11213A
Darker −30%#050A13
Darker −40%#000000
More saturated +25%#1148A0
Less saturated −25%#3D5274

Channel breakdown

R39
G77
B138
Red39 (15.3%)
Green77 (30.2%)
Blue138 (54.1%)
Hue216.97°
Saturation (HSL)55.93%
Lightness34.71%
Dominant channelBlue
Hex per channelR 27 · G 4D · B 8A

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Every value on this page was computed from “274d8a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.