Recognised as Colour

#C31A00

#C31A00
Red
Dark
Nearest: Firebrick

#C31A00 is a red with RGB values 195, 26, 0 and HSL 8°, 100%, 38%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C31A00#C31A00

HEX#C31A00

RGBrgb(195, 26, 0)

RGB (0–1)0.7647, 0.102, 0

RGB percentages76.5%, 10.2%, 0%

HSLhsl(8, 100%, 38.2%)

HSV / HSBhsv(8, 100%, 76.5%)

CMYK0%, 86.7%, 100%, 23.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,786,176

CSS custom property--colour: #C31A00;

Brightness & contrast

Relative luminance0.12341WCAG 2.x, 0 is black and 1 is white

Perceived brightness108.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.06:1

Contrast with white6.06:1WCAG normal text: AA

Contrast with black3.47:1WCAG normal text: Fail

Greyscale equivalent#3C3C3C

Inverted#3CE5FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#564B00no red cones; affects about 1% of men; ΔE 67.7 from the original

Deuteranopia#7E6F00no green cones; the most common form, about 1% of men; ΔE 66.8 from the original

Tritanopia#D80019no blue cones; rare, and affects men and women equally; ΔE 10.6 from the original

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

Contrast with white, large text6.06:1WCAG large text: AAA

Contrast with black, large text3.47:1WCAG large text: AA

Named colours

Firebrick · ΔE 18.9 Orange red · ΔE 21.6 Dark red · ΔE 22.5 Tomato · ΔE 22.7 Crimson · ΔE 24.1 Red · ΔE 24.4

Nearest named CSS colourFirebrick (#B22222)ΔE 18.92, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A9C3

Analogous#C30047, #C37B00

Triadic#00C31A, #1A00C3

Split complementary#00C37B, #0048C3

Tetradic#48C300, #00A9C3, #7C00C3

Tints, shades & saturation

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

Lighter +40%#FF9F90

Lighter +30%#FF735D

Lighter +20%#FF462A

Lighter +10%#F62100

Darker −10%#901300

Darker −20%#5D0C00

Darker −30%#2A0600

Darker −40%#000000

More saturated +25%#C31A00

Less saturated −25%#AB2C18

Channel breakdown

R195

G26

Red195 (76.5%)

Green26 (10.2%)

Blue0 (0%)

Hue8°

Saturation (HSL)100%

Lightness38.24%

Dominant channelRed

Hex per channelR C3 · G 1A · B 00

Keep nerding

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

#C31A00

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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