Recognised as Colour

#A51E39

#A51E39
Red
Dark
Nearest: Brown

#A51E39 is a red with RGB values 165, 30, 57 and HSL 348°, 69%, 38%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A51E39#A51E39

HEX#A51E39

RGBrgb(165, 30, 57)

RGB (0–1)0.6471, 0.1176, 0.2235

RGB percentages64.7%, 11.8%, 22.4%

HSLhsl(348, 69.2%, 38.2%)

HSV / HSBhsv(348, 81.8%, 64.7%)

CMYK0%, 81.8%, 65.5%, 35.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,821,177

CSS custom property--colour: #A51E39;

Brightness & contrast

Relative luminance0.09223WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.38:1

Contrast with white7.38:1WCAG normal text: AAA

Contrast with black2.84:1WCAG normal text: Fail

Greyscale equivalent#3D3D3D

Inverted#5AE1C6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#474439no red cones; affects about 1% of men; ΔE 57.1 from the original

Deuteranopia#696035no green cones; the most common form, about 1% of men; ΔE 57.7 from the original

Tritanopia#B5002Ano blue cones; rare, and affects men and women equally; ΔE 14.7 from the original

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

Contrast with white, large text7.38:1WCAG large text: AAA

Contrast with black, large text2.84:1WCAG large text: Fail

Named colours

Brown · ΔE 11.7 Firebrick · ΔE 18.1 Indian red · ΔE 19.5 Maroon · ΔE 22.1 Dark red · ΔE 23.2 Crimson · ΔE 24.1

Nearest named CSS colourBrown (#A52A2A)ΔE 11.66, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1EA58A

Analogous#A51E7D, #A5471E

Triadic#39A51E, #1E39A5

Split complementary#1EA546, #1E7DA5

Tetradic#7DA51E, #1EA58A, #461EA5

Tints, shades & saturation

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

Lighter +40%#EEA1B0

Lighter +30%#E6768C

Lighter +20%#DE4B68

Lighter +10%#D02648

Darker −10%#7A162A

Darker −20%#4F0E1B

Darker −30%#24060C

Darker −40%#000000

More saturated +25%#BD062A

Less saturated −25%#8D3648

Channel breakdown

R165

G30

B57

Red165 (64.7%)

Green30 (11.8%)

Blue57 (22.4%)

Hue348°

Saturation (HSL)69.23%

Lightness38.24%

Dominant channelRed

Hex per channelR A5 · G 1E · B 39

Keep nerding

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

#A51E39

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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