Nerdulator> put something in

Recognised as Colour

#B31A50

  • #B31A50
  • Red
  • Dark
  • Nearest: Brown

#B31A50 is a red with RGB values 179, 26, 80 and HSL 339°, 75%, 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

#B31A50#B31A50
HEX#B31A50
RGBrgb(179, 26, 80)
RGB (0–1)0.702, 0.102, 0.3137
RGB percentages70.2%, 10.2%, 31.4%
HSLhsl(338.8, 74.6%, 40.2%)
HSV / HSBhsv(338.8, 85.5%, 70.2%)
CMYK0%, 85.5%, 55.3%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,737,680
CSS custom property--colour: #B31A50;

Brightness & contrast

Relative luminance0.10902WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.5 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#3E3E3E
Inverted#4CE5AF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#474A51no red cones; affects about 1% of men; ΔE 62.3 from the original
Deuteranopia#6E674Cno green cones; the most common form, about 1% of men; ΔE 62.9 from the original
Tritanopia#C40033no blue cones; rare, and affects men and women equally; ΔE 22.2 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 23.6Indian red · ΔE 24.4Crimson · ΔE 27.2Medium violet red · ΔE 27.5Pale violetred · ΔE 27.5Firebrick · ΔE 28.3
Nearest named CSS colourBrown (#A52A2A)ΔE 23.59, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1AB37D
Analogous#B31A9D, #B3301A
Triadic#50B31A, #1A50B3
Split complementary#1AB330, #1A9DB3
Tetradic#9DB31A, #1AB37D, #301AB3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F2A7C1
Lighter +30%#EC7AA2
Lighter +20%#E54E83
Lighter +10%#DF2164
Darker −10%#86143C
Darker −20%#5A0D28
Darker −30%#2D0714
Darker −40%#010000
More saturated +25%#CD0048
Less saturated −25%#993458

Channel breakdown

R179
G26
B80
Red179 (70.2%)
Green26 (10.2%)
Blue80 (31.4%)
Hue338.82°
Saturation (HSL)74.63%
Lightness40.2%
Dominant channelRed
Hex per channelR B3 · G 1A · B 50

Keep nerding

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

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “b31a50” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.