Colour

#BB1700

#BB1700
Red
Dark
Nearest: Firebrick

#BB1700 is a red with RGB values 187, 23, 0 and HSL 7°, 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

#BB1700#BB1700

HEX#BB1700

RGBrgb(187, 23, 0)

RGB (0–1)0.7333, 0.0902, 0

RGB percentages73.3%, 9%, 0%

HSLhsl(7.4, 100%, 36.7%)

HSV / HSBhsv(7.4, 100%, 73.3%)

CMYK0%, 87.7%, 100%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,261,120

CSS custom property--colour: #BB1700;

Brightness & contrast

Relative luminance0.11178WCAG 2.x, 0 is black and 1 is white

Perceived brightness103.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.49:1

Contrast with white6.49:1WCAG normal text: AA

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

Greyscale equivalent#383838

Inverted#44E8FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#524700no red cones; affects about 1% of men; ΔE 65.7 from the original

Deuteranopia#796A00no green cones; the most common form, about 1% of men; ΔE 64.7 from the original

Tritanopia#CF0016no blue cones; rare, and affects men and women equally; ΔE 9.7 from the original

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

Contrast with white, large text6.49:1WCAG 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 23.6 Crimson · ΔE 23.7 Maroon · ΔE 24.5 Orange red · ΔE 24.6

Nearest named CSS colourFirebrick (#B22222)ΔE 16.61, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A4BB

Analogous#BB0046, #BB7400

Triadic#00BB17, #1700BB

Split complementary#00BB75, #0046BB

Tetradic#47BB00, #00A4BB, #7500BB

Tints, shades & saturation

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

Lighter +40%#FF9788

Lighter +30%#FF6A55

Lighter +20%#FF3D22

Lighter +10%#EE1D00

Darker −10%#881100

Darker −20%#550A00

Darker −30%#220400

Darker −40%#000000

More saturated +25%#BB1700

Less saturated −25%#A42917

Channel breakdown

R187

G23

Red187 (73.3%)

Green23 (9%)

Blue0 (0%)

Hue7.38°

Saturation (HSL)100%

Lightness36.67%

Dominant channelRed

Hex per channelR BB · G 17 · B 00

Keep nerding

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#BB1700

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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