Recognised as Colour

#B31B4E

#B31B4E
Red
Dark
Nearest: Brown

#B31B4E is a red with RGB values 179, 27, 78 and HSL 340°, 74%, 40%. 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

#B31B4E#B31B4E

HEX#B31B4E

RGBrgb(179, 27, 78)

RGB (0–1)0.702, 0.1059, 0.3059

RGB percentages70.2%, 10.6%, 30.6%

HSLhsl(339.9, 73.8%, 40.4%)

HSV / HSBhsv(339.9, 84.9%, 70.2%)

CMYK0%, 84.9%, 56.4%, 29.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,737,934

CSS custom property--colour: #B31B4E;

Brightness & contrast

Relative luminance0.10918WCAG 2.x, 0 is black and 1 is white

Perceived brightness103.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.6:1

Contrast with white6.6:1WCAG normal text: AA

Contrast with black3.18:1WCAG normal text: Fail

Greyscale equivalent#3F3F3F

Inverted#4CE4B1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#484A4Fno red cones; affects about 1% of men; ΔE 62 from the original

Deuteranopia#6F684Ano green cones; the most common form, about 1% of men; ΔE 63 from the original

Tritanopia#C40033no blue cones; rare, and affects men and women equally; ΔE 21.1 from the original

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

Contrast with white, large text6.6:1WCAG large text: AAA

Contrast with black, large text3.18:1WCAG large text: AA

Named colours

Brown · ΔE 22.3 Indian red · ΔE 23.5 Crimson · ΔE 26.2 Firebrick · ΔE 27 Pale violetred · ΔE 27.8 Medium violet red · ΔE 28.8

Nearest named CSS colourBrown (#A52A2A)ΔE 22.27, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1BB380

Analogous#B31B9A, #B3341B

Triadic#4EB31B, #1B4EB3

Split complementary#1BB334, #1B9AB3

Tetradic#9AB31B, #1BB380, #341BB3

Tints, shades & saturation

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

Lighter +40%#F2A8C1

Lighter +30%#EB7CA1

Lighter +20%#E54F81

Lighter +10%#DE2362

Darker −10%#87143B

Darker −20%#5A0E27

Darker −30%#2E0714

Darker −40%#020001

More saturated +25%#CD0146

Less saturated −25%#993556

Channel breakdown

R179

G27

B78

Red179 (70.2%)

Green27 (10.6%)

Blue78 (30.6%)

Hue339.87°

Saturation (HSL)73.79%

Lightness40.39%

Dominant channelRed

Hex per channelR B3 · G 1B · B 4E

Keep nerding

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

#B31B4E

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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