Recognised as Colour

#B51A36

#B51A36
Red
Dark
Nearest: Brown

#B51A36 is a red with RGB values 181, 26, 54 and HSL 349°, 75%, 41%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#B51A36#B51A36

HEX#B51A36

RGBrgb(181, 26, 54)

RGB (0–1)0.7098, 0.102, 0.2118

RGB percentages71%, 10.2%, 21.2%

HSLhsl(349.2, 74.9%, 40.6%)

HSV / HSBhsv(349.2, 85.6%, 71%)

CMYK0%, 85.6%, 70.2%, 29%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,868,726

CSS custom property--colour: #B51A36;

Brightness & contrast

Relative luminance0.10829WCAG 2.x, 0 is black and 1 is white

Perceived brightness102.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.63:1

Contrast with white6.63:1WCAG normal text: AA

Contrast with black3.17:1WCAG normal text: Fail

Greyscale equivalent#3D3D3D

Inverted#4AE5C9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4D4836no red cones; affects about 1% of men; ΔE 63.1 from the original

Deuteranopia#736831no green cones; the most common form, about 1% of men; ΔE 63.4 from the original

Tritanopia#C70027no blue cones; rare, and affects men and women equally; ΔE 15 from the original

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

Contrast with white, large text6.63:1WCAG large text: AAA

Contrast with black, large text3.17:1WCAG large text: AA

Named colours

Brown · ΔE 10.9 Firebrick · ΔE 12.1 Crimson · ΔE 15.7 Dark red · ΔE 20.7 Indian red · ΔE 20.7 Maroon · ΔE 21.5

Nearest named CSS colourBrown (#A52A2A)ΔE 10.93, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1AB599

Analogous#B51A83, #B54C1A

Triadic#36B51A, #1A36B5

Split complementary#1AB54C, #1A83B5

Tetradic#83B51A, #1AB599, #4C1AB5

Tints, shades & saturation

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

Lighter +40%#F3A8B6

Lighter +30%#EC7C90

Lighter +20%#E64F6A

Lighter +10%#DF2345

Darker −10%#881429

Darker −20%#5C0D1B

Darker −30%#2F070E

Darker −40%#030001

More saturated +25%#CF0025

Less saturated −25%#9B3447

Channel breakdown

R181

G26

B54

Red181 (71%)

Green26 (10.2%)

Blue54 (21.2%)

Hue349.16°

Saturation (HSL)74.88%

Lightness40.59%

Dominant channelRed

Hex per channelR B5 · G 1A · B 36

Keep nerding

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

#B51A36

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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