Colour

#B31400

#B31400
Red
Dark
Nearest: Firebrick

#B31400 is a red with RGB values 179, 20, 0 and HSL 7°, 100%, 35%. It is a dark colour, so white text on it reaches 7:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B31400#B31400

HEX#B31400

RGBrgb(179, 20, 0)

RGB (0–1)0.702, 0.0784, 0

RGB percentages70.2%, 7.8%, 0%

HSLhsl(6.7, 100%, 35.1%)

HSV / HSBhsv(6.7, 100%, 70.2%)

CMYK0%, 88.8%, 100%, 29.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,736,064

CSS custom property--colour: #B31400;

Brightness & contrast

Relative luminance0.10084WCAG 2.x, 0 is black and 1 is white

Perceived brightness99.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.96:1

Contrast with white6.96:1WCAG normal text: AA

Contrast with black3.02:1WCAG normal text: Fail

Greyscale equivalent#343434

Inverted#4CEBFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4E4400no red cones; affects about 1% of men; ΔE 64.2 from the original

Deuteranopia#736500no green cones; the most common form, about 1% of men; ΔE 63.1 from the original

Tritanopia#C60014no blue cones; rare, and affects men and women equally; ΔE 9.1 from the original

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

Contrast with white, large text6.96:1WCAG large text: AAA

Contrast with black, large text3.02:1WCAG large text: AA

Named colours

Firebrick · ΔE 14.5 Dark red · ΔE 16.4 Maroon · ΔE 21.5 Brown · ΔE 23.2 Crimson · ΔE 23.7 Tomato · ΔE 24.8

Nearest named CSS colourFirebrick (#B22222)ΔE 14.54, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#009FB3

Analogous#B30046, #B36E00

Triadic#00B314, #1400B3

Split complementary#00B36E, #0045B3

Tetradic#45B300, #009FB3, #6D00B3

Tints, shades & saturation

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

Lighter +40%#FF8E80

Lighter +30%#FF614D

Lighter +20%#FF341A

Lighter +10%#E61A00

Darker −10%#800E00

Darker −20%#4D0900

Darker −30%#1A0300

Darker −40%#000000

More saturated +25%#B31400

Less saturated −25%#9D2516

Channel breakdown

R179

G20

Red179 (70.2%)

Green20 (7.8%)

Blue0 (0%)

Hue6.7°

Saturation (HSL)100%

Lightness35.1%

Dominant channelRed

Hex per channelR B3 · G 14 · B 00

Keep nerding

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

#B31400

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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