Recognised as Colour

#B4000D

#B4000D
Red
Dark
Nearest: Firebrick

#B4000D is a red with RGB values 180, 0, 13 and HSL 356°, 100%, 35%. 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

#B4000D#B4000D

HEX#B4000D

RGBrgb(180, 0, 13)

RGB (0–1)0.7059, 0, 0.051

RGB percentages70.6%, 0%, 5.1%

HSLhsl(355.7, 100%, 35.3%)

HSV / HSBhsv(355.7, 100%, 70.6%)

CMYK0%, 100%, 92.8%, 29.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,796,493

CSS custom property--colour: #B4000D;

Brightness & contrast

Relative luminance0.09732WCAG 2.x, 0 is black and 1 is white

Perceived brightness98.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.13:1

Contrast with white7.13:1WCAG normal text: AAA

Contrast with black2.95:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#4BFFF2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4A4108no red cones; affects about 1% of men; ΔE 67 from the original

Deuteranopia#726400no green cones; the most common form, about 1% of men; ΔE 66 from the original

Tritanopia#C7000Bno blue cones; rare, and affects men and women equally; ΔE 8.2 from the original

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

Contrast with white, large text7.13:1WCAG large text: AAA

Contrast with black, large text2.95:1WCAG large text: Fail

Named colours

Firebrick · ΔE 11 Dark red · ΔE 15.2 Crimson · ΔE 18.7 Maroon · ΔE 20.1 Brown · ΔE 20.2 Tomato · ΔE 25.2

Nearest named CSS colourFirebrick (#B22222)ΔE 10.95, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B4A7

Analogous#B40067, #B44D00

Triadic#0DB400, #000DB4

Split complementary#00B44D, #0067B4

Tetradic#67B400, #00B4A7, #4D00B4

Tints, shades & saturation

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

Lighter +40%#FF818A

Lighter +30%#FF4E5B

Lighter +20%#FF1B2B

Lighter +10%#E70011

Darker −10%#810009

Darker −20%#4E0006

Darker −30%#1B0002

Darker −40%#000000

More saturated +25%#B4000D

Less saturated −25%#9E1720

Channel breakdown

R180

B13

Red180 (70.6%)

Green0 (0%)

Blue13 (5.1%)

Hue355.67°

Saturation (HSL)100%

Lightness35.29%

Dominant channelRed

Hex per channelR B4 · G 00 · B 0D

Keep nerding

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

#B4000D

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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