Colour

#B7321D

#B7321D
Red
Dark
Nearest: Firebrick

#B7321D is a red with RGB values 183, 50, 29 and HSL 8°, 73%, 42%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B7321D#B7321D

HEX#B7321D

RGBrgb(183, 50, 29)

RGB (0–1)0.7176, 0.1961, 0.1137

RGB percentages71.8%, 19.6%, 11.4%

HSLhsl(8.2, 72.6%, 41.6%)

HSV / HSBhsv(8.2, 84.2%, 71.8%)

CMYK0%, 72.7%, 84.2%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,005,917

CSS custom property--colour: #B7321D;

Brightness & contrast

Relative luminance0.12437WCAG 2.x, 0 is black and 1 is white

Perceived brightness107.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.02:1

Contrast with white6.02:1WCAG normal text: AA

Contrast with black3.49:1WCAG normal text: Fail

Greyscale equivalent#4D4D4D

Inverted#48CDE2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5A5019no red cones; affects about 1% of men; ΔE 56.8 from the original

Deuteranopia#7B6E15no green cones; the most common form, about 1% of men; ΔE 57.3 from the original

Tritanopia#CA002Fno blue cones; rare, and affects men and women equally; ΔE 17.9 from the original

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

Contrast with white, large text6.02:1WCAG large text: AAA

Contrast with black, large text3.49:1WCAG large text: AA

Named colours

Firebrick · ΔE 7.3 Brown · ΔE 13.7 Dark red · ΔE 14 Maroon · ΔE 17.7 Tomato · ΔE 21.3 Crimson · ΔE 21.7

Nearest named CSS colourFirebrick (#B22222)ΔE 7.32, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1DA2B7

Analogous#B71D55, #B77F1D

Triadic#1DB732, #321DB7

Split complementary#1DB77F, #1D55B7

Tetradic#55B71D, #1DA2B7, #7F1DB7

Tints, shades & saturation

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

Lighter +40%#F2B7AE

Lighter +30%#EB9082

Lighter +20%#E46956

Lighter +10%#DD422A

Darker −10%#8B2616

Darker −20%#5F1A0F

Darker −30%#330E08

Darker −40%#070201

More saturated +25%#D21F03

Less saturated −25%#9D4538

Channel breakdown

R183

G50

B29

Red183 (71.8%)

Green50 (19.6%)

Blue29 (11.4%)

Hue8.18°

Saturation (HSL)72.64%

Lightness41.57%

Dominant channelRed

Hex per channelR B7 · G 32 · B 1D

Keep nerding

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

#B7321D

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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