Recognised as Colour

#E90521

#E90521
Red
Dark
Nearest: Red

#E90521 is a red with RGB values 233, 5, 33 and HSL 353°, 96%, 47%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#E90521#E90521

HEX#E90521

RGBrgb(233, 5, 33)

RGB (0–1)0.9137, 0.0196, 0.1294

RGB percentages91.4%, 2%, 12.9%

HSLhsl(352.6, 95.8%, 46.7%)

HSV / HSBhsv(352.6, 97.9%, 91.4%)

CMYK0%, 97.9%, 85.8%, 8.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,271,201

CSS custom property--colour: #E90521;

Brightness & contrast

Relative luminance0.17542WCAG 2.x, 0 is black and 1 is white

Perceived brightness128 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.66:1

Contrast with white4.66:1WCAG normal text: AA

Contrast with black4.51:1WCAG normal text: AA

Greyscale equivalent#373737

Inverted#16FADE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#62571Eno red cones; affects about 1% of men; ΔE 80.7 from the original

Deuteranopia#948410no green cones; the most common form, about 1% of men; ΔE 80.7 from the original

Tritanopia#FF0019no blue cones; rare, and affects men and women equally; ΔE 11.2 from the original

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

Contrast with white, large text4.66:1WCAG large text: AAA

Contrast with black, large text4.51:1WCAG large text: AAA

Named colours

Red · ΔE 17.3 Crimson · ΔE 18.2 Orange red · ΔE 20.9 Tomato · ΔE 22.1 Firebrick · ΔE 25.3 Dark red · ΔE 33.2

Nearest named CSS colourRed (#FF0000)ΔE 17.3, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#05E9CD

Analogous#E90593, #E95B05

Triadic#21E905, #0521E9

Split complementary#05E95B, #0593E9

Tetradic#93E905, #05E9CD, #5B05E9

Tints, shades & saturation

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

Lighter +40%#FEBCC4

Lighter +30%#FD8B98

Lighter +20%#FB596D

Lighter +10%#FA2741

Darker −10%#B7041A

Darker −20%#850313

Darker −30%#53020C

Darker −40%#210105

More saturated +25%#EE001D

Less saturated −25%#CB2337

Channel breakdown

R233

B33

Red233 (91.4%)

Green5 (2%)

Blue33 (12.9%)

Hue352.63°

Saturation (HSL)95.8%

Lightness46.67%

Dominant channelRed

Hex per channelR E9 · G 05 · B 21

Keep nerding

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

#E90521

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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