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Recognised as Colour

#274F8B

  • #274F8B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#274F8B is a blue with RGB values 39, 79, 139 and HSL 216°, 56%, 35%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#274F8B#274F8B
HEX#274F8B
RGBrgb(39, 79, 139)
RGB (0–1)0.1529, 0.3098, 0.5451
RGB percentages15.3%, 31%, 54.5%
HSLhsl(216, 56.2%, 34.9%)
HSV / HSBhsv(216, 71.9%, 54.5%)
CMYK71.9%, 43.2%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,576,267
CSS custom property--colour: #274F8B;

Brightness & contrast

Relative luminance0.07887WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.15:1
Contrast with white8.15:1WCAG normal text: AAA
Contrast with black2.58:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#D8B074

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#32548Dno red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#224B8Ano green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#005D66no blue cones; rare, and affects men and women equally; ΔE 37.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.15:1WCAG large text: AAA
Contrast with black, large text2.58:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.5Steel blue · ΔE 22.6Cornflower blue · ΔE 30.6Midnight blue · ΔE 32.6Slate grey · ΔE 34.4Light slate grey · ΔE 35.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.49, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B6327
Analogous#27818B, #31278B
Triadic#8B274F, #4F8B27
Split complementary#8B3127, #818B27
Tetradic#8B2781, #8B6327, #278B31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9BB8E3
Lighter +30%#739BD8
Lighter +20%#4B7FCD
Lighter +10%#3266B3
Darker −10%#1C3863
Darker −20%#11223B
Darker −30%#050B14
Darker −40%#000000
More saturated +25%#114BA1
Less saturated −25%#3D5375

Channel breakdown

R39
G79
B139
Red39 (15.3%)
Green79 (31%)
Blue139 (54.5%)
Hue216°
Saturation (HSL)56.18%
Lightness34.9%
Dominant channelBlue
Hex per channelR 27 · G 4F · B 8B

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Every value on this page was computed from “274f8b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.