Recognised as Colour

#B1041D

#B1041D
Red
Dark
Nearest: Firebrick

#B1041D is a red with RGB values 177, 4, 29 and HSL 351°, 96%, 35%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#B1041D#B1041D

HEX#B1041D

RGBrgb(177, 4, 29)

RGB (0–1)0.6941, 0.0157, 0.1137

RGB percentages69.4%, 1.6%, 11.4%

HSLhsl(351.3, 95.6%, 35.5%)

HSV / HSBhsv(351.3, 97.7%, 69.4%)

CMYK0%, 97.7%, 83.6%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,600,925

CSS custom property--colour: #B1041D;

Brightness & contrast

Relative luminance0.09523WCAG 2.x, 0 is black and 1 is white

Perceived brightness97.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.23:1

Contrast with white7.23:1WCAG normal text: AAA

Contrast with black2.9:1WCAG normal text: Fail

Greyscale equivalent#2B2B2B

Inverted#4EFBE2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#49411Bno red cones; affects about 1% of men; ΔE 65.4 from the original

Deuteranopia#6F6314no green cones; the most common form, about 1% of men; ΔE 65.5 from the original

Tritanopia#C40013no 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 text7.23:1WCAG large text: AAA

Contrast with black, large text2.9:1WCAG large text: Fail

Named colours

Firebrick · ΔE 5.4 Brown · ΔE 13.6 Dark red · ΔE 13.6 Crimson · ΔE 15 Maroon · ΔE 17.2 Tomato · ΔE 26.7

Nearest named CSS colourFirebrick (#B22222)ΔE 5.45, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#04B198

Analogous#B10474, #B14204

Triadic#1DB104, #041DB1

Split complementary#04B142, #0474B1

Tetradic#73B104, #04B198, #4104B1

Tints, shades & saturation

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

Lighter +40%#FC8596

Lighter +30%#FB536B

Lighter +20%#FA2140

Lighter +10%#E30525

Darker −10%#7F0315

Darker −20%#4D020D

Darker −30%#1B0104

Darker −40%#000000

More saturated +25%#B5001A

Less saturated −25%#9A1B2D

Channel breakdown

R177

B29

Red177 (69.4%)

Green4 (1.6%)

Blue29 (11.4%)

Hue351.33°

Saturation (HSL)95.58%

Lightness35.49%

Dominant channelRed

Hex per channelR B1 · G 04 · B 1D

Keep nerding

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

#B1041D

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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