Colour

#B1001A

#B1001A
Red
Dark
Nearest: Firebrick

#B1001A is a red with RGB values 177, 0, 26 and HSL 351°, 100%, 35%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#B1001A#B1001A

HEX#B1001A

RGBrgb(177, 0, 26)

RGB (0–1)0.6941, 0, 0.102

RGB percentages69.4%, 0%, 10.2%

HSLhsl(351.2, 100%, 34.7%)

HSV / HSBhsv(351.2, 100%, 69.4%)

CMYK0%, 100%, 85.3%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,599,898

CSS custom property--colour: #B1001A;

Brightness & contrast

Relative luminance0.09422WCAG 2.x, 0 is black and 1 is white

Perceived brightness97.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.28:1

Contrast with white7.28:1WCAG normal text: AAA

Contrast with black2.88:1WCAG normal text: Fail

Greyscale equivalent#282828

Inverted#4EFFE5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#484018no red cones; affects about 1% of men; ΔE 66.1 from the original

Deuteranopia#6F630Fno green cones; the most common form, about 1% of men; ΔE 66.1 from the original

Tritanopia#C40010no blue cones; rare, and affects men and women equally; ΔE 11.5 from the original

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

Contrast with white, large text7.28:1WCAG large text: AAA

Contrast with black, large text2.88:1WCAG large text: Fail

Named colours

Firebrick · ΔE 6.2 Dark red · ΔE 13.6 Brown · ΔE 14.8 Crimson · ΔE 15.4 Maroon · ΔE 17.5 Tomato · ΔE 26.5

Nearest named CSS colourFirebrick (#B22222)ΔE 6.22, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B197

Analogous#B10072, #B13F00

Triadic#1AB100, #001AB1

Split complementary#00B13F, #0072B1

Tetradic#72B100, #00B197, #3F00B1

Tints, shades & saturation

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

Lighter +40%#FF7E91

Lighter +30%#FF4B65

Lighter +20%#FF183A

Lighter +10%#E40021

Darker −10%#7E0013

Darker −20%#4B000B

Darker −30%#180004

Darker −40%#000000

More saturated +25%#B1001A

Less saturated −25%#9B162A

Channel breakdown

R177

B26

Red177 (69.4%)

Green0 (0%)

Blue26 (10.2%)

Hue351.19°

Saturation (HSL)100%

Lightness34.71%

Dominant channelRed

Hex per channelR B1 · G 00 · B 1A

Keep nerding

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

#B1001A

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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