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Recognised as Colour

#B81A55

  • #B81A55
  • Red
  • Dark
  • Nearest: Medium violet red

#B81A55 is a red with RGB values 184, 26, 85 and HSL 338°, 75%, 41%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Medium violet red.

Colour values

#B81A55#B81A55
HEX#B81A55
RGBrgb(184, 26, 85)
RGB (0–1)0.7216, 0.102, 0.3333
RGB percentages72.2%, 10.2%, 33.3%
HSLhsl(337.6, 75.2%, 41.2%)
HSV / HSBhsv(337.6, 85.9%, 72.2%)
CMYK0%, 85.9%, 53.8%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,065,365
CSS custom property--colour: #B81A55;

Brightness & contrast

Relative luminance0.11585WCAG 2.x, 0 is black and 1 is white
Perceived brightness106.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.33:1
Contrast with white6.33:1WCAG normal text: AA
Contrast with black3.32:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#47E5AA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#484C56no red cones; affects about 1% of men; ΔE 63.7 from the original
Deuteranopia#716A51no green cones; the most common form, about 1% of men; ΔE 64.3 from the original
Tritanopia#C90036no blue cones; rare, and affects men and women equally; ΔE 23.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.33:1WCAG large text: AAA
Contrast with black, large text3.32:1WCAG large text: AA

Named colours

Medium violet red · ΔE 25.4Indian red · ΔE 25.7Brown · ΔE 25.8Pale violetred · ΔE 27.2Crimson · ΔE 27.6Firebrick · ΔE 30.1
Nearest named CSS colourMedium violet red (#C71585)ΔE 25.36, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1AB87D
Analogous#B81AA4, #B82E1A
Triadic#55B81A, #1A55B8
Split complementary#1AB82E, #1AA4B8
Tetradic#A4B81A, #1AB87D, #2E1AB8

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F3ABC6
Lighter +30%#ED7EA7
Lighter +20%#E65289
Lighter +10%#E0256B
Darker −10%#8B1440
Darker −20%#5F0D2C
Darker −30%#320717
Darker −40%#050102
More saturated +25%#D2004E
Less saturated −25%#9E345C

Channel breakdown

R184
G26
B85
Red184 (72.2%)
Green26 (10.2%)
Blue85 (33.3%)
Hue337.59°
Saturation (HSL)75.24%
Lightness41.18%
Dominant channelRed
Hex per channelR B8 · G 1A · B 55

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Every value on this page was computed from “b81a55” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.