Colour

#B7041F

#B7041F
Red
Dark
Nearest: Firebrick

#B7041F is a red with RGB values 183, 4, 31 and HSL 351°, 96%, 37%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B7041F#B7041F

HEX#B7041F

RGBrgb(183, 4, 31)

RGB (0–1)0.7176, 0.0157, 0.1216

RGB percentages71.8%, 1.6%, 12.2%

HSLhsl(350.9, 95.7%, 36.7%)

HSV / HSBhsv(350.9, 97.8%, 71.8%)

CMYK0%, 97.8%, 83.1%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,994,143

CSS custom property--colour: #B7041F;

Brightness & contrast

Relative luminance0.10253WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.88:1

Contrast with white6.88:1WCAG normal text: AA

Contrast with black3.05:1WCAG normal text: Fail

Greyscale equivalent#2C2C2C

Inverted#48FBE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4B431Dno red cones; affects about 1% of men; ΔE 67.2 from the original

Deuteranopia#736615no green cones; the most common form, about 1% of men; ΔE 66.9 from the original

Tritanopia#CA0015no blue cones; rare, and affects men and women equally; ΔE 11.8 from the original

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

Contrast with white, large text6.88:1WCAG large text: AAA

Contrast with black, large text3.05:1WCAG large text: AA

Named colours

Firebrick · ΔE 6.7 Crimson · ΔE 13.3 Brown · ΔE 15.3 Dark red · ΔE 15.5 Maroon · ΔE 19.3 Tomato · ΔE 25.5

Nearest named CSS colourFirebrick (#B22222)ΔE 6.71, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#04B79C

Analogous#B70478, #B74304

Triadic#1FB704, #041FB7

Split complementary#04B743, #0478B7

Tetradic#79B704, #04B79C, #4304B7

Tints, shades & saturation

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

Lighter +40%#FC8B9C

Lighter +30%#FB5971

Lighter +20%#FA2747

Lighter +10%#E90527

Darker −10%#850317

Darker −20%#53020E

Darker −30%#210106

Darker −40%#000000

More saturated +25%#BB001C

Less saturated −25%#A01B2F

Channel breakdown

R183

B31

Red183 (71.8%)

Green4 (1.6%)

Blue31 (12.2%)

Hue350.95°

Saturation (HSL)95.72%

Lightness36.67%

Dominant channelRed

Hex per channelR B7 · G 04 · B 1F

Keep nerding

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

#B7041F

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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