Colour

#428CFA

#428CFA
Blue
Dark
Nearest: Dodgerblue

#428CFA is a blue with RGB values 66, 140, 250 and HSL 216°, 95%, 62%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#428CFA#428CFA

HEX#428CFA

RGBrgb(66, 140, 250)

RGB (0–1)0.2588, 0.549, 0.9804

RGB percentages25.9%, 54.9%, 98%

HSLhsl(215.9, 94.8%, 62%)

HSV / HSBhsv(215.9, 73.6%, 98%)

CMYK73.6%, 44%, 0%, 2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,361,466

CSS custom property--colour: #428CFA;

Brightness & contrast

Relative luminance0.26817WCAG 2.x, 0 is black and 1 is white

Perceived brightness141.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.36:1

Contrast with white3.3:1WCAG normal text: Fail

Contrast with black6.36:1WCAG normal text: AA

Greyscale equivalent#848484

Inverted#BD7305

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5497FEno red cones; affects about 1% of men; ΔE 6.2 from the original

Deuteranopia#2E86F8no green cones; the most common form, about 1% of men; ΔE 3.6 from the original

Tritanopia#00A6B7no blue cones; rare, and affects men and women equally; ΔE 60.7 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.3:1WCAG large text: AA

Contrast with black, large text6.36:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 4.2 Cornflower blue · ΔE 13.4 Royal blue · ΔE 17.1 Medium purple · ΔE 26.1 Slate blue · ΔE 26.4 Medium slateblue · ΔE 28.4

Nearest named CSS colourDodgerblue (#1E90FF)ΔE 4.22, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#FAB042

Analogous#42E8FA, #5442FA

Triadic#FA428C, #8CFA42

Split complementary#FA5442, #E8FA42

Tetradic#FA42E8, #FAB042, #42FA54

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFFFFF

Lighter +30%#D7E7FE

Lighter +20%#A5C8FD

Lighter +10%#74AAFB

Darker −10%#106EF9

Darker −20%#0657D0

Darker −30%#04429F

Darker −40%#032E6D

More saturated +25%#3D8BFF

Less saturated −25%#5A91E2

Channel breakdown

R66

G140

B250

Red66 (25.9%)

Green140 (54.9%)

Blue250 (98%)

Hue215.87°

Saturation (HSL)94.85%

Lightness61.96%

Dominant channelBlue

Hex per channelR 42 · G 8C · B FA

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#428CFA

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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