Recognised as Colour

#E52121

#E52121
Red
Dark
Nearest: Crimson

#E52121 is a red with RGB values 229, 33, 33 and HSL 0°, 79%, 51%. It is a dark colour, so white text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#E52121#E52121

HEX#E52121

RGBrgb(229, 33, 33)

RGB (0–1)0.898, 0.1294, 0.1294

RGB percentages89.8%, 12.9%, 12.9%

HSLhsl(0, 79%, 51.4%)

HSV / HSBhsv(0, 85.6%, 89.8%)

CMYK0%, 85.6%, 85.6%, 10.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,016,225

CSS custom property--colour: #E52121;

Brightness & contrast

Relative luminance0.17856WCAG 2.x, 0 is black and 1 is white

Perceived brightness128.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.59:1

Contrast with white4.59:1WCAG normal text: AA

Contrast with black4.57:1WCAG normal text: AA

Greyscale equivalent#4B4B4B

Inverted#1ADEDE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#665A1Dno red cones; affects about 1% of men; ΔE 75.7 from the original

Deuteranopia#948412no green cones; the most common form, about 1% of men; ΔE 76.1 from the original

Tritanopia#FD0025no blue cones; rare, and affects men and women equally; ΔE 10.8 from the original

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

Contrast with white, large text4.59:1WCAG large text: AAA

Contrast with black, large text4.57:1WCAG large text: AAA

Named colours

Crimson · ΔE 17.9 Tomato · ΔE 18.6 Red · ΔE 19.1 Orange red · ΔE 19.7 Firebrick · ΔE 22.3 Dark red · ΔE 30.4

Nearest named CSS colourCrimson (#DC143C)ΔE 17.85, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#21E5E5

Analogous#E52183, #E58321

Triadic#21E521, #2121E5

Split complementary#21E583, #2183E5

Tetradic#83E521, #21E5E5, #8321E5

Tints, shades & saturation

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

Lighter +40%#FAD8D8

Lighter +30%#F5AAAA

Lighter +20%#F07C7C

Lighter +10%#EA4F4F

Darker −10%#BD1616

Darker −20%#8F1111

Darker −30%#620B0B

Darker −40%#340606

More saturated +25%#FF0707

Less saturated −25%#C64040

Channel breakdown

R229

G33

B33

Red229 (89.8%)

Green33 (12.9%)

Blue33 (12.9%)

Hue0°

Saturation (HSL)79.03%

Lightness51.37%

Dominant channelRed

Hex per channelR E5 · G 21 · B 21

Keep nerding

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

#E52121

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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