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Recognised as Colour

#4F57CC

  • #4F57CC
  • Blue
  • Dark
  • Nearest: Slate blue

#4F57CC is a blue with RGB values 79, 87, 204 and HSL 236°, 55%, 55%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#4F57CC#4F57CC
HEX#4F57CC
RGBrgb(79, 87, 204)
RGB (0–1)0.3098, 0.3412, 0.8
RGB percentages31%, 34.1%, 80%
HSLhsl(236.2, 55.1%, 55.5%)
HSV / HSBhsv(236.2, 61.3%, 80%)
CMYK61.3%, 57.4%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,199,820
CSS custom property--colour: #4F57CC;

Brightness & contrast

Relative luminance0.12838WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.89:1
Contrast with white5.89:1WCAG normal text: AA
Contrast with black3.57:1WCAG normal text: Fail
Greyscale equivalent#5E5E5E
Inverted#B0A833

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006AD0no red cones; affects about 1% of men; ΔE 18.5 from the original
Deuteranopia#005FCAno green cones; the most common form, about 1% of men; ΔE 13.3 from the original
Tritanopia#007389no blue cones; rare, and affects men and women equally; ΔE 66.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.89:1WCAG large text: AAA
Contrast with black, large text3.57:1WCAG large text: AA

Named colours

Slate blue · ΔE 6.2Royal blue · ΔE 8.8Medium slateblue · ΔE 13.5Medium purple · ΔE 17.7Rebecca purple · ΔE 20.5Dark slateblue · ΔE 23.8
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 6.17, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CCC44F
Analogous#4F96CC, #854FCC
Triadic#CC4F57, #57CC4F
Split complementary#CC854F, #96CC4F
Tetradic#CC4F96, #CCC44F, #4FCC85

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EDEEFA
Lighter +30%#C6C8EE
Lighter +20%#9EA2E3
Lighter +10%#777DD7
Darker −10%#343CB4
Darker −20%#292F8C
Darker −30%#1D2265
Darker −40%#12153D
More saturated +25%#333EE8
Less saturated −25%#6B70B0

Channel breakdown

R79
G87
B204
Red79 (31%)
Green87 (34.1%)
Blue204 (80%)
Hue236.16°
Saturation (HSL)55.07%
Lightness55.49%
Dominant channelBlue
Hex per channelR 4F · G 57 · B CC

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Every value on this page was computed from “4f57cc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.