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Recognised as Colour

#397EFE

  • #397EFE
  • Blue
  • Dark
  • Nearest: Royal blue

#397EFE is a blue with RGB values 57, 126, 254 and HSL 219°, 99%, 61%. 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

#397EFE#397EFE
HEX#397EFE
RGBrgb(57, 126, 254)
RGB (0–1)0.2235, 0.4941, 0.9961
RGB percentages22.4%, 49.4%, 99.6%
HSLhsl(219, 99%, 61%)
HSV / HSBhsv(219, 77.6%, 99.6%)
CMYK77.6%, 50.4%, 0%, 0.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,768,062
CSS custom property--colour: #397EFE;

Brightness & contrast

Relative luminance0.22947WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.59:1
Contrast with white3.76:1WCAG normal text: Fail
Contrast with black5.59:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#C68101

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2A8DFFno red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#007BFBno green cones; the most common form, about 1% of men; ΔE 3.4 from the original
Tritanopia#009DB2no blue cones; rare, and affects men and women equally; ΔE 69.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.76:1WCAG large text: AA
Contrast with black, large text5.59:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.2Dodgerblue · ΔE 14.9Medium slateblue · ΔE 19.1Slate blue · ΔE 20.4Medium purple · ΔE 24.3Cornflower blue · ΔE 25.5
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.23, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FEB939
Analogous#39E0FE, #5739FE
Triadic#FE397E, #7EFE39
Split complementary#FE5739, #E1FE39
Tetradic#FE39E0, #FEB939, #39FE57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D1E1FF
Lighter +20%#9EC0FF
Lighter +10%#6C9FFE
Darker −10%#065DFE
Darker −20%#014AD0
Darker −30%#01389D
Darker −40%#01266A
More saturated +25%#387EFF
Less saturated −25%#5285E5

Channel breakdown

R57
G126
B254
Red57 (22.4%)
Green126 (49.4%)
Blue254 (99.6%)
Hue218.98°
Saturation (HSL)98.99%
Lightness60.98%
Dominant channelBlue
Hex per channelR 39 · G 7E · B FE

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Every value on this page was computed from “397efe” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.