Colour

#B50105

#B50105
Red
Dark
Nearest: Firebrick

#B50105 is a red with RGB values 181, 1, 5 and HSL 359°, 99%, 36%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#B50105#B50105

HEX#B50105

RGBrgb(181, 1, 5)

RGB (0–1)0.7098, 0.0039, 0.0196

RGB percentages71%, 0.4%, 2%

HSLhsl(358.7, 98.9%, 35.7%)

HSV / HSBhsv(358.7, 99.4%, 71%)

CMYK0%, 99.4%, 97.2%, 29%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,862,277

CSS custom property--colour: #B50105;

Brightness & contrast

Relative luminance0.09856WCAG 2.x, 0 is black and 1 is white

Perceived brightness99 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.07:1

Contrast with white7.07:1WCAG normal text: AAA

Contrast with black2.97:1WCAG normal text: Fail

Greyscale equivalent#282828

Inverted#4AFEFA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4B4100no red cones; affects about 1% of men; ΔE 66.8 from the original

Deuteranopia#726500no green cones; the most common form, about 1% of men; ΔE 66.6 from the original

Tritanopia#C80009no blue cones; rare, and affects men and women equally; ΔE 7.1 from the original

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

Contrast with white, large text7.07:1WCAG large text: AAA

Contrast with black, large text2.97:1WCAG large text: Fail

Named colours

Firebrick · ΔE 13.7 Dark red · ΔE 16.8 Crimson · ΔE 20.9 Maroon · ΔE 21.9 Brown · ΔE 22.9 Tomato · ΔE 25.2

Nearest named CSS colourFirebrick (#B22222)ΔE 13.74, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#01B5B1

Analogous#B5015F, #B55701

Triadic#05B501, #0105B5

Split complementary#01B557, #015FB5

Tetradic#5FB501, #01B5B1, #5701B5

Tints, shades & saturation

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

Lighter +40%#FE8486

Lighter +30%#FE5155

Lighter +20%#FE1E23

Lighter +10%#E80106

Darker −10%#820104

Darker −20%#500002

Darker −30%#1D0001

Darker −40%#000000

More saturated +25%#B60004

Less saturated −25%#9E181B

Channel breakdown

R181

Red181 (71%)

Green1 (0.4%)

Blue5 (2%)

Hue358.67°

Saturation (HSL)98.9%

Lightness35.69%

Dominant channelRed

Hex per channelR B5 · G 01 · B 05

Keep nerding

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

#B50105

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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