Colour

#CB301D

#CB301D
Red
Dark
Nearest: Firebrick

#CB301D is a red with RGB values 203, 48, 29 and HSL 7°, 75%, 45%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CB301D#CB301D

HEX#CB301D

RGBrgb(203, 48, 29)

RGB (0–1)0.7961, 0.1882, 0.1137

RGB percentages79.6%, 18.8%, 11.4%

HSLhsl(6.6, 75%, 45.5%)

HSV / HSBhsv(6.6, 85.7%, 79.6%)

CMYK0%, 76.4%, 85.7%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,316,125

CSS custom property--colour: #CB301D;

Brightness & contrast

Relative luminance0.14899WCAG 2.x, 0 is black and 1 is white

Perceived brightness117.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.28:1

Contrast with white5.28:1WCAG normal text: AA

Contrast with black3.98:1WCAG normal text: Fail

Greyscale equivalent#505050

Inverted#34CFE2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#615618no red cones; affects about 1% of men; ΔE 64.2 from the original

Deuteranopia#877812no green cones; the most common form, about 1% of men; ΔE 64.3 from the original

Tritanopia#E0002Eno blue cones; rare, and affects men and women equally; ΔE 15.5 from the original

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

Contrast with white, large text5.28:1WCAG large text: AAA

Contrast with black, large text3.98:1WCAG large text: AA

Named colours

Firebrick · ΔE 12.5 Tomato · ΔE 16.8 Crimson · ΔE 18.6 Dark red · ΔE 20.3 Brown · ΔE 21.3 Maroon · ΔE 24.9

Nearest named CSS colourFirebrick (#B22222)ΔE 12.49, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1DB8CB

Analogous#CB1D61, #CB871D

Triadic#1DCB30, #301DCB

Split complementary#1DCB87, #1D61CB

Tetradic#61CB1D, #1DB8CB, #871DCB

Tints, shades & saturation

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

Lighter +40%#F6C4BE

Lighter +30%#EF9C92

Lighter +20%#E97365

Lighter +10%#E34B38

Darker −10%#9E2517

Darker −20%#721B10

Darker −30%#45100A

Darker −40%#190604

More saturated +25%#E81900

Less saturated −25%#AE473A

Channel breakdown

R203

G48

B29

Red203 (79.6%)

Green48 (18.8%)

Blue29 (11.4%)

Hue6.55°

Saturation (HSL)75%

Lightness45.49%

Dominant channelRed

Hex per channelR CB · G 30 · B 1D

Keep nerding

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

#CB301D

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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