Colour

#B90000

#B90000
Red
Dark
Nearest: Firebrick

#B90000 is a red with RGB values 185, 0, 0 and HSL 0°, 100%, 36%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B90000#B90000

HEX#B90000

RGBrgb(185, 0, 0)

RGB (0–1)0.7255, 0, 0

RGB percentages72.5%, 0%, 0%

HSLhsl(0, 100%, 36.3%)

HSV / HSBhsv(0, 100%, 72.5%)

CMYK0%, 100%, 100%, 27.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,124,160

CSS custom property--colour: #B90000;

Brightness & contrast

Relative luminance0.10314WCAG 2.x, 0 is black and 1 is white

Perceived brightness101.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.86:1

Contrast with white6.86:1WCAG normal text: AA

Contrast with black3.06:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#46FFFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4D4300no red cones; affects about 1% of men; ΔE 68.5 from the original

Deuteranopia#756700no green cones; the most common form, about 1% of men; ΔE 67.4 from the original

Tritanopia#CD0008no blue cones; rare, and affects men and women equally; ΔE 6.9 from the original

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

Contrast with white, large text6.86:1WCAG large text: AAA

Contrast with black, large text3.06:1WCAG large text: AA

Named colours

Firebrick · ΔE 16.7 Dark red · ΔE 19.5 Crimson · ΔE 22.5 Maroon · ΔE 24.6 Tomato · ΔE 25.2 Orange red · ΔE 25.5

Nearest named CSS colourFirebrick (#B22222)ΔE 16.71, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B9B9

Analogous#B9005D, #B95D00

Triadic#00B900, #0000B9

Split complementary#00B95D, #005DB9

Tetradic#5DB900, #00B9B9, #5D00B9

Tints, shades & saturation

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

Lighter +40%#FF8686

Lighter +30%#FF5353

Lighter +20%#FF2020

Lighter +10%#EC0000

Darker −10%#860000

Darker −20%#530000

Darker −30%#200000

Darker −40%#000000

More saturated +25%#B90000

Less saturated −25%#A21717

Channel breakdown

R185

Red185 (72.5%)

Green0 (0%)

Blue0 (0%)

Hue0°

Saturation (HSL)100%

Lightness36.27%

Dominant channelRed

Hex per channelR B9 · G 00 · B 00

Keep nerding

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#B90000

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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