Recognised as Colour

#C51C1E

#C51C1E
Red
Dark
Nearest: Firebrick

#C51C1E is a red with RGB values 197, 28, 30 and HSL 359°, 75%, 44%. 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

#C51C1E#C51C1E

HEX#C51C1E

RGBrgb(197, 28, 30)

RGB (0–1)0.7725, 0.1098, 0.1176

RGB percentages77.3%, 11%, 11.8%

HSLhsl(359.3, 75.1%, 44.1%)

HSV / HSBhsv(359.3, 85.8%, 77.3%)

CMYK0%, 85.8%, 84.8%, 22.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,917,790

CSS custom property--colour: #C51C1E;

Brightness & contrast

Relative luminance0.12795WCAG 2.x, 0 is black and 1 is white

Perceived brightness110.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.9:1

Contrast with white5.9:1WCAG normal text: AA

Contrast with black3.56:1WCAG normal text: Fail

Greyscale equivalent#404040

Inverted#3AE3E1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#574D1Bno red cones; affects about 1% of men; ΔE 67.5 from the original

Deuteranopia#7F7113no green cones; the most common form, about 1% of men; ΔE 67.7 from the original

Tritanopia#DA0020no 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 text5.9:1WCAG large text: AAA

Contrast with black, large text3.56:1WCAG large text: AA

Named colours

Firebrick · ΔE 10 Crimson · ΔE 14.3 Dark red · ΔE 18.7 Brown · ΔE 19.5 Tomato · ΔE 20.4 Maroon · ΔE 23.2

Nearest named CSS colourFirebrick (#B22222)ΔE 10.04, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1CC5C3

Analogous#C51C72, #C56F1C

Triadic#1EC51C, #1C1EC5

Split complementary#1CC56F, #1C72C5

Tetradic#72C51C, #1CC5C3, #6F1CC5

Tints, shades & saturation

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

Lighter +40%#F5B8B9

Lighter +30%#EF8B8D

Lighter +20%#E85F60

Lighter +10%#E23234

Darker −10%#981617

Darker −20%#6C0F10

Darker −30%#3F090A

Darker −40%#120303

More saturated +25%#E10003

Less saturated −25%#A93839

Channel breakdown

R197

G28

B30

Red197 (77.3%)

Green28 (11%)

Blue30 (11.8%)

Hue359.29°

Saturation (HSL)75.11%

Lightness44.12%

Dominant channelRed

Hex per channelR C5 · G 1C · B 1E

Keep nerding

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

#C51C1E

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

Nerdulate something else