Recognised as Colour

#E30011

#E30011
Red
Dark
Nearest: Red

#E30011 is a red with RGB values 227, 0, 17 and HSL 356°, 100%, 45%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#E30011#E30011

HEX#E30011

RGBrgb(227, 0, 17)

RGB (0–1)0.8902, 0, 0.0667

RGB percentages89%, 0%, 6.7%

HSLhsl(355.5, 100%, 44.5%)

HSV / HSBhsv(355.5, 100%, 89%)

CMYK0%, 100%, 92.5%, 11%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,876,689

CSS custom property--colour: #E30011;

Brightness & contrast

Relative luminance0.16371WCAG 2.x, 0 is black and 1 is white

Perceived brightness124.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.91:1

Contrast with white4.91:1WCAG normal text: AA

Contrast with black4.27:1WCAG normal text: Fail

Greyscale equivalent#313131

Inverted#1CFFEE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#60540Ano red cones; affects about 1% of men; ΔE 79.3 from the original

Deuteranopia#908000no green cones; the most common form, about 1% of men; ΔE 79.2 from the original

Tritanopia#FB0010no blue cones; rare, and affects men and women equally; ΔE 9.6 from the original

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

Contrast with white, large text4.91:1WCAG large text: AAA

Contrast with black, large text4.27:1WCAG large text: AA

Named colours

Red · ΔE 13.8 Orange red · ΔE 17 Crimson · ΔE 23 Tomato · ΔE 23.7 Firebrick · ΔE 27.1 Dark red · ΔE 33.4

Nearest named CSS colourRed (#FF0000)ΔE 13.84, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00E3D2

Analogous#E30082, #E36100

Triadic#11E300, #0011E3

Split complementary#00E361, #0082E3

Tetradic#82E300, #00E3D2, #6100E3

Tints, shades & saturation

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

Lighter +40%#FFB0B6

Lighter +30%#FF7D87

Lighter +20%#FF4A58

Lighter +10%#FF1728

Darker −10%#B0000D

Darker −20%#7D0009

Darker −30%#4A0006

Darker −40%#170002

More saturated +25%#E30011

Less saturated −25%#C71C29

Channel breakdown

R227

B17

Red227 (89%)

Green0 (0%)

Blue17 (6.7%)

Hue355.51°

Saturation (HSL)100%

Lightness44.51%

Dominant channelRed

Hex per channelR E3 · G 00 · B 11

Keep nerding

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

#E30011

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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