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Recognised as Colour

#256DE4

  • #256DE4
  • Blue
  • Dark
  • Nearest: Royal blue

#256DE4 is a blue with RGB values 37, 109, 228 and HSL 217°, 78%, 52%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#256DE4#256DE4
HEX#256DE4
RGBrgb(37, 109, 228)
RGB (0–1)0.1451, 0.4275, 0.8941
RGB percentages14.5%, 42.7%, 89.4%
HSLhsl(217.4, 78%, 52%)
HSV / HSBhsv(217.4, 83.8%, 89.4%)
CMYK83.8%, 52.2%, 0%, 10.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,452,964
CSS custom property--colour: #256DE4;

Brightness & contrast

Relative luminance0.16932WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.79:1
Contrast with white4.79:1WCAG normal text: AA
Contrast with black4.39:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#DA921B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0F7BE8no red cones; affects about 1% of men; ΔE 10.1 from the original
Deuteranopia#006AE2no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#008A9Eno blue cones; rare, and affects men and women equally; ΔE 65.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.79:1WCAG large text: AAA
Contrast with black, large text4.39:1WCAG large text: AA

Named colours

Royal blue · ΔE 4.5Dodgerblue · ΔE 16.7Slate blue · ΔE 16.8Medium slateblue · ΔE 19.6Medium purple · ΔE 23.1Cornflower blue · ΔE 25.3
Nearest named CSS colourRoyal blue (#4169E1)ΔE 4.5, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E49C25
Analogous#25CDE4, #3C25E4
Triadic#E4256D, #6DE425
Split complementary#E43C25, #CDE425
Tetradic#E425CD, #E49C25, #25E43C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DBE7FA
Lighter +30%#ADC8F5
Lighter +20%#80AAEF
Lighter +10%#528BEA
Darker −10%#1856BE
Darker −20%#124291
Darker −30%#0C2D64
Darker −40%#071936
More saturated +25%#0A66FF
Less saturated −25%#4475C5

Channel breakdown

R37
G109
B228
Red37 (14.5%)
Green109 (42.7%)
Blue228 (89.4%)
Hue217.38°
Saturation (HSL)77.96%
Lightness51.96%
Dominant channelBlue
Hex per channelR 25 · G 6D · B E4

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Every value on this page was computed from “256de4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.