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Recognised as Colour

#357FFF

  • #357FFF
  • Blue
  • Dark
  • Nearest: Royal blue

#357FFF is a blue with RGB values 53, 127, 255 and HSL 218°, 100%, 60%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#357FFF#357FFF
HEX#357FFF
RGBrgb(53, 127, 255)
RGB (0–1)0.2078, 0.498, 1
RGB percentages20.8%, 49.8%, 100%
HSLhsl(218, 100%, 60.4%)
HSV / HSBhsv(218, 79.2%, 100%)
CMYK79.2%, 50.2%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,506,175
CSS custom property--colour: #357FFF;

Brightness & contrast

Relative luminance0.23156WCAG 2.x, 0 is black and 1 is white
Perceived brightness133.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.63:1
Contrast with white3.73:1WCAG normal text: Fail
Contrast with black5.63:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#CA8000

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B8EFFno red cones; affects about 1% of men; ΔE 12.4 from the original
Deuteranopia#007CFCno green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#009EB3no blue cones; rare, and affects men and women equally; ΔE 69.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.73:1WCAG large text: AA
Contrast with black, large text5.63:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.8Dodgerblue · ΔE 14.4Medium slateblue · ΔE 19.8Slate blue · ΔE 21.1Medium purple · ΔE 24.8Cornflower blue · ΔE 25.3
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.76, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFB535
Analogous#35E4FF, #5035FF
Triadic#FF357F, #7FFF35
Split complementary#FF5035, #E4FF35
Tetradic#FF35E4, #FFB535, #35FF50

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#CEE0FF
Lighter +20%#9BC0FF
Lighter +10%#689FFF
Darker −10%#025FFF
Darker −20%#004BCE
Darker −30%#00399B
Darker −40%#002668
More saturated +25%#357FFF
Less saturated −25%#4E86E6

Channel breakdown

R53
G127
B255
Red53 (20.8%)
Green127 (49.8%)
Blue255 (100%)
Hue218.02°
Saturation (HSL)100%
Lightness60.39%
Dominant channelBlue
Hex per channelR 35 · G 7F · B FF

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Every value on this page was computed from “357fff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.