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Recognised as Colour

#2879FF

  • #2879FF
  • Blue
  • Dark
  • Nearest: Royal blue

#2879FF is a blue with RGB values 40, 121, 255 and HSL 217°, 100%, 58%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2879FF#2879FF
HEX#2879FF
RGBrgb(40, 121, 255)
RGB (0–1)0.1569, 0.4745, 1
RGB percentages15.7%, 47.5%, 100%
HSLhsl(217.4, 100%, 57.8%)
HSV / HSBhsv(217.4, 84.3%, 100%)
CMYK84.3%, 52.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,652,671
CSS custom property--colour: #2879FF;

Brightness & contrast

Relative luminance0.21346WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.27:1
Contrast with white3.99:1WCAG normal text: Fail
Contrast with black5.27:1WCAG normal text: AA
Greyscale equivalent#717171
Inverted#D78600

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0089FFno red cones; affects about 1% of men; ΔE 13.7 from the original
Deuteranopia#0076FCno green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#009AB0no blue cones; rare, and affects men and women equally; ΔE 72.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.99:1WCAG large text: AA
Contrast with black, large text5.27:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.7Medium slateblue · ΔE 18.1Dodgerblue · ΔE 18.7Slate blue · ΔE 20.7Medium purple · ΔE 26.1Cornflower blue · ΔE 29.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.73, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFAE28
Analogous#28E4FF, #4328FF
Triadic#FF2879, #79FF28
Split complementary#FF4328, #E4FF28
Tetradic#FF28E4, #FFAE28, #28FF43

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4F8FF
Lighter +30%#C1D8FF
Lighter +20%#8EB9FF
Lighter +10%#5B99FF
Darker −10%#005CF4
Darker −20%#0049C1
Darker −30%#00358E
Darker −40%#00225B
More saturated +25%#2879FF
Less saturated −25%#4380E4

Channel breakdown

R40
G121
B255
Red40 (15.7%)
Green121 (47.5%)
Blue255 (100%)
Hue217.4°
Saturation (HSL)100%
Lightness57.84%
Dominant channelBlue
Hex per channelR 28 · G 79 · B FF

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Every value on this page was computed from “2879ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.