Colour

#424C51

#424C51
Blue
Dark
Nearest: Dark slate grey

#424C51 is a blue with RGB values 66, 76, 81 and HSL 200°, 10%, 29%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#424C51#424C51

HEX#424C51

RGBrgb(66, 76, 81)

RGB (0–1)0.2588, 0.298, 0.3176

RGB percentages25.9%, 29.8%, 31.8%

HSLhsl(200, 10.2%, 28.8%)

HSV / HSBhsv(200, 18.5%, 31.8%)

CMYK18.5%, 6.2%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,344,913

CSS custom property--colour: #424C51;

Brightness & contrast

Relative luminance0.06921WCAG 2.x, 0 is black and 1 is white

Perceived brightness73.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.81:1

Contrast with white8.81:1WCAG normal text: AAA

Contrast with black2.38:1WCAG normal text: Fail

Greyscale equivalent#4A4A4A

Inverted#BDB3AE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#494B51no red cones; affects about 1% of men; ΔE 3.4 from the original

Deuteranopia#474A51no green cones; the most common form, about 1% of men; ΔE 3.2 from the original

Tritanopia#3E4D4Eno blue cones; rare, and affects men and women equally; ΔE 3.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text8.81:1WCAG large text: AAA

Contrast with black, large text2.38:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9 Dim grey · ΔE 13.8 Slate grey · ΔE 22.1 Gray · ΔE 22.5 Light slate grey · ΔE 25.2 Teal · ΔE 31.2

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 8.98, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#514742

Analogous#42514E, #424451

Triadic#51424C, #4C5142

Split complementary#514245, #514E42

Tetradic#4E4251, #514742, #455142

Tints, shades & saturation

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

Lighter +40%#A7B2B8

Lighter +30%#8B9AA1

Lighter +20%#708189

Lighter +10%#59666D

Darker −10%#2B3235

Darker −20%#141719

Darker −30%#000000

Darker −40%#000000

More saturated +25%#305263

Less saturated −25%#4A4A4A

Channel breakdown

R66

G76

B81

Red66 (25.9%)

Green76 (29.8%)

Blue81 (31.8%)

Hue200°

Saturation (HSL)10.2%

Lightness28.82%

Dominant channelBlue

Hex per channelR 42 · G 4C · B 51

Keep nerding

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

#424C51

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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