Colour

#CB000B

#CB000B
Red
Dark
Nearest: Firebrick

#CB000B is a red with RGB values 203, 0, 11 and HSL 357°, 100%, 40%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CB000B#CB000B

HEX#CB000B

RGBrgb(203, 0, 11)

RGB (0–1)0.7961, 0, 0.0431

RGB percentages79.6%, 0%, 4.3%

HSLhsl(356.7, 100%, 39.8%)

HSV / HSBhsv(356.7, 100%, 79.6%)

CMYK0%, 100%, 94.6%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,303,819

CSS custom property--colour: #CB000B;

Brightness & contrast

Relative luminance0.12721WCAG 2.x, 0 is black and 1 is white

Perceived brightness111.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.93:1

Contrast with white5.93:1WCAG normal text: AA

Contrast with black3.54:1WCAG normal text: Fail

Greyscale equivalent#2C2C2C

Inverted#34FFF4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#554A04no red cones; affects about 1% of men; ΔE 72.8 from the original

Deuteranopia#817200no green cones; the most common form, about 1% of men; ΔE 72.5 from the original

Tritanopia#E1000Cno blue cones; rare, and affects men and women equally; ΔE 8.6 from the original

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

Contrast with white, large text5.93:1WCAG large text: AAA

Contrast with black, large text3.54:1WCAG large text: AA

Named colours

Firebrick · ΔE 19.5 Crimson · ΔE 20.2 Red · ΔE 21.9 Orange red · ΔE 22.1 Tomato · ΔE 23 Dark red · ΔE 24.8

Nearest named CSS colourFirebrick (#B22222)ΔE 19.49, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00CBC0

Analogous#CB0070, #CB5B00

Triadic#0BCB00, #000BCB

Split complementary#00CB5B, #0070CB

Tetradic#70CB00, #00CBC0, #5B00CB

Tints, shades & saturation

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

Lighter +40%#FF989E

Lighter +30%#FF656D

Lighter +20%#FF323D

Lighter +10%#FE000E

Darker −10%#980008

Darker −20%#650005

Darker −30%#320003

Darker −40%#000000

More saturated +25%#CB000B

Less saturated −25%#B21922

Channel breakdown

R203

B11

Red203 (79.6%)

Green0 (0%)

Blue11 (4.3%)

Hue356.75°

Saturation (HSL)100%

Lightness39.8%

Dominant channelRed

Hex per channelR CB · G 00 · B 0B

Keep nerding

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

#CB000B

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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