Colour

#E43004

#E43004
Red
Dark
Nearest: Orange red

#E43004 is a red with RGB values 228, 48, 4 and HSL 12°, 97%, 45%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#E43004#E43004

HEX#E43004

RGBrgb(228, 48, 4)

RGB (0–1)0.8941, 0.1882, 0.0157

RGB percentages89.4%, 18.8%, 1.6%

HSLhsl(11.8, 96.6%, 45.5%)

HSV / HSBhsv(11.8, 98.2%, 89.4%)

CMYK0%, 78.9%, 98.2%, 10.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,954,500

CSS custom property--colour: #E43004;

Brightness & contrast

Relative luminance0.18617WCAG 2.x, 0 is black and 1 is white

Perceived brightness130 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.72:1

Contrast with white4.45:1WCAG normal text: Fail

Contrast with black4.72:1WCAG normal text: AA

Greyscale equivalent#535353

Inverted#1BCFFB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C5E00no red cones; affects about 1% of men; ΔE 71.9 from the original

Deuteranopia#978600no green cones; the most common form, about 1% of men; ΔE 71.9 from the original

Tritanopia#FC002Bno blue cones; rare, and affects men and women equally; ΔE 17.5 from the original

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

Contrast with white, large text4.45:1WCAG large text: AA

Contrast with black, large text4.72:1WCAG large text: AAA

Named colours

Orange red · ΔE 10.4 Red · ΔE 15.3 Tomato · ΔE 21.1 Firebrick · ΔE 28.4 Crimson · ΔE 28.7 Chocolate · ΔE 30.1

Nearest named CSS colourOrange red (#FF4500)ΔE 10.43, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#04B8E4

Analogous#E40448, #E4A004

Triadic#04E430, #3004E4

Split complementary#04E4A0, #0448E4

Tetradic#48E404, #04B8E4, #A004E4

Tints, shades & saturation

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

Lighter +40%#FEC4B6

Lighter +30%#FD9C84

Lighter +20%#FC7352

Lighter +10%#FB4B20

Darker −10%#B22503

Darker −20%#801B02

Darker −30%#4E1001

Darker −40%#1C0600

More saturated +25%#E82E00

Less saturated −25%#C74221

Channel breakdown

R228

G48

Red228 (89.4%)

Green48 (18.8%)

Blue4 (1.6%)

Hue11.79°

Saturation (HSL)96.55%

Lightness45.49%

Dominant channelRed

Hex per channelR E4 · G 30 · B 04

Keep nerding

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#E43004

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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