Colour

#BB1800

#BB1800
Red
Dark
Nearest: Firebrick

#BB1800 is a red with RGB values 187, 24, 0 and HSL 8°, 100%, 37%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BB1800#BB1800

HEX#BB1800

RGBrgb(187, 24, 0)

RGB (0–1)0.7333, 0.0941, 0

RGB percentages73.3%, 9.4%, 0%

HSLhsl(7.7, 100%, 36.7%)

HSV / HSBhsv(7.7, 100%, 73.3%)

CMYK0%, 87.2%, 100%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,261,376

CSS custom property--colour: #BB1800;

Brightness & contrast

Relative luminance0.11218WCAG 2.x, 0 is black and 1 is white

Perceived brightness103.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.47:1

Contrast with white6.47:1WCAG normal text: AA

Contrast with black3.24:1WCAG normal text: Fail

Greyscale equivalent#393939

Inverted#44E7FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#524800no red cones; affects about 1% of men; ΔE 66 from the original

Deuteranopia#796A00no green cones; the most common form, about 1% of men; ΔE 64.5 from the original

Tritanopia#CF0017no blue cones; rare, and affects men and women equally; ΔE 10.1 from the original

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

Contrast with white, large text6.47:1WCAG large text: AAA

Contrast with black, large text3.24:1WCAG large text: AA

Named colours

Firebrick · ΔE 16.6 Dark red · ΔE 19.5 Tomato · ΔE 23.5 Crimson · ΔE 23.8 Maroon · ΔE 24.5 Orange red · ΔE 24.5

Nearest named CSS colourFirebrick (#B22222)ΔE 16.58, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A3BB

Analogous#BB0046, #BB7500

Triadic#00BB18, #1800BB

Split complementary#00BB76, #0045BB

Tetradic#46BB00, #00A3BB, #7600BB

Tints, shades & saturation

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

Lighter +40%#FF9788

Lighter +30%#FF6B55

Lighter +20%#FF3E22

Lighter +10%#EE1F00

Darker −10%#881100

Darker −20%#550B00

Darker −30%#220400

Darker −40%#000000

More saturated +25%#BB1800

Less saturated −25%#A42917

Channel breakdown

R187

G24

Red187 (73.3%)

Green24 (9.4%)

Blue0 (0%)

Hue7.7°

Saturation (HSL)100%

Lightness36.67%

Dominant channelRed

Hex per channelR BB · G 18 · B 00

Keep nerding

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#BB1800

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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